Inventory Accounting Policy
Inventory Disclosure
Adjustment to Inventory: from LIFO to FIFO
Adjusted Ratios: LIFO vs. FIFO (Summary)
Adjusted Current Ratio
Adjusted Net Profit Margin
Adjusted Total Asset Turnover
Adjusted Financial Leverage
Adjusted Return on Equity (ROE)
Adjusted Return on Assets (ROA)

Crude oil, products and merchandise inventories are carried at the lower of current market value or cost (generally determined under the last-in, first-out method – LIFO). Inventory costs include expenditures and other charges (including depreciation) directly and indirectly incurred in bringing the inventory to its existing condition and location. Selling expenses and general and administrative expenses are reported as period costs and excluded from inventory cost. Inventories of materials and supplies are valued at cost or less.

Source: 10-K (filing date: 2018-02-28).

Exxon Mobil Corp., Statement of Financial Position, Inventory

USD $ in millions

		Dec 31, 2017		Dec 31, 2016		Dec 31, 2015		Dec 31, 2014		Dec 31, 2013
	Crude oil, products and merchandise
	Materials and supplies
	Inventories

Based on: 10-K (filing date: 2018-02-28), 10-K (filing date: 2017-02-22), 10-K (filing date: 2016-02-24), 10-K (filing date: 2015-02-25), 10-K (filing date: 2014-02-26).

Item	Description	The company
Inventories	Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.	Exxon Mobil Corp.’s inventories declined from 2015 to 2016 but then increased from 2016 to 2017 exceeding 2015 level.

Adjusting LIFO Inventory to FIFO (Current) Cost

USD $ in millions

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	Adjustment to Inventories
	Inventories at LIFO (as reported)
	Add: Inventory LIFO reserve
	Inventories at FIFO (adjusted)
	Adjustment to Current Assets
	Current assets (as reported)
	Add: Inventory LIFO reserve
	Current assets (adjusted)
	Adjustment to Total Assets
	Total assets (as reported)
	Add: Inventory LIFO reserve
	Total assets (adjusted)
	Adjustment to Total ExxonMobil Share Of Equity
	Total ExxonMobil share of equity (as reported)
	Add: Inventory LIFO reserve
	Total ExxonMobil share of equity (adjusted)
	Adjustment to Net Income Attributable To ExxonMobil
	Net income attributable to ExxonMobil (as reported)
	Add: Increase (decrease) in inventory LIFO reserve
	Net income attributable to ExxonMobil (adjusted)

Based on: 10-K (filing date: 2018-02-28), 10-K (filing date: 2017-02-22), 10-K (filing date: 2016-02-24), 10-K (filing date: 2015-02-25), 10-K (filing date: 2014-02-26).

Exxon Mobil Corp.’s inventory value on Dec 31, 2017 would be $27,792 (in millions) if the FIFO inventory method was used instead of LIFO. Exxon Mobil Corp.’s inventories, valued on a LIFO basis, on Dec 31, 2017 were $16,992 . Exxon Mobil Corp.’s inventories would have been $10,800 higher than reported on Dec 31, 2017 if the FIFO method had been used instead.

Exxon Mobil Corp., Financial Data: Reported vs. Adjusted

Exxon Mobil Corp., adjusted ratios

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	Current Ratio
	Reported current ratio (LIFO)
	Adjusted current ratio (FIFO)
	Net Profit Margin
	Reported net profit margin (LIFO)
	Adjusted net profit margin (FIFO)
	Total Asset Turnover
	Reported total asset turnover (LIFO)
	Adjusted total asset turnover (FIFO)
	Financial Leverage
	Reported financial leverage (LIFO)
	Adjusted financial leverage (FIFO)
	Return on Equity (ROE)
	Reported ROE (LIFO)
	Adjusted ROE (FIFO)
	Return on Assets (ROA)
	Reported ROA (LIFO)
	Adjusted ROA (FIFO)

Based on: 10-K (filing date: 2018-02-28), 10-K (filing date: 2017-02-22), 10-K (filing date: 2016-02-24), 10-K (filing date: 2015-02-25), 10-K (filing date: 2014-02-26).

Ratio	Description	The company
Adjusted current ratio	A liquidity ratio calculated as adjusted current assets divided by current liabilities.	Exxon Mobil Corp.’s adjusted current ratio improved from 2015 to 2016 but then slightly deteriorated from 2016 to 2017.
Adjusted net profit margin	An indicator of profitability, calculated as adjusted net income divided by revenue.	Exxon Mobil Corp.’s adjusted net profit margin improved from 2015 to 2016 and from 2016 to 2017.
Adjusted total asset turnover	An activity ratio calculated as total revenue divided by adjusted total assets.	Exxon Mobil Corp.’s adjusted total asset turnover deteriorated from 2015 to 2016 but then slightly improved from 2016 to 2017.
Adjusted financial leverage	A measure of financial leverage calculated as adjusted total assets divided by adjusted total equity. Financial leverage is the extent to which a company can effect, through the use of debt, a proportional change in the return on common equity that is greater than a given proportional change in operating income.	Exxon Mobil Corp.’s adjusted financial leverage declined from 2015 to 2016 and from 2016 to 2017.
Adjusted ROE	A profitability ratio calculated as adjusted net income divided by adjusted shareholders’ equity.	Exxon Mobil Corp.’s adjusted ROE improved from 2015 to 2016 and from 2016 to 2017.
Adjusted ROA	A profitability ratio calculated as adjusted net income divided by adjusted total assets.	Exxon Mobil Corp.’s adjusted ROA improved from 2015 to 2016 and from 2016 to 2017.

Exxon Mobil Corp., Ratios: Reported vs. Adjusted

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Selected Financial Data (USD $ in millions)
	Current assets
	Current liabilities
	Ratio
	Current ratio¹
	Adjusted: from LIFO to FIFO
	Selected Financial Data (USD $ in millions)
	Adjusted current assets
	Current liabilities
	Ratio
	Adjusted current ratio²

Based on: 10-K (filing date: 2018-02-28), 10-K (filing date: 2017-02-22), 10-K (filing date: 2016-02-24), 10-K (filing date: 2015-02-25), 10-K (filing date: 2014-02-26).

2017 Calculations

¹ Current ratio = Current assets ÷ Current liabilities
= hidden ÷ hidden = hidden

² Adjusted current ratio = Adjusted current assets ÷ Current liabilities
= hidden ÷ hidden = hidden

Ratio	Description	The company
Adjusted current ratio	A liquidity ratio calculated as adjusted current assets divided by current liabilities.	Exxon Mobil Corp.’s adjusted current ratio improved from 2015 to 2016 but then slightly deteriorated from 2016 to 2017.

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Selected Financial Data (USD $ in millions)
	Net income attributable to ExxonMobil
	Sales and other operating revenue
	Ratio
	Net profit margin¹
	Adjusted: from LIFO to FIFO
	Selected Financial Data (USD $ in millions)
	Adjusted net income attributable to ExxonMobil
	Sales and other operating revenue
	Ratio
	Adjusted net profit margin²

Based on: 10-K (filing date: 2018-02-28), 10-K (filing date: 2017-02-22), 10-K (filing date: 2016-02-24), 10-K (filing date: 2015-02-25), 10-K (filing date: 2014-02-26).

2017 Calculations

¹ Net profit margin = 100 × Net income attributable to ExxonMobil ÷ Sales and other operating revenue
= 100 × hidden ÷ hidden = hidden

² Adjusted net profit margin = 100 × Adjusted net income attributable to ExxonMobil ÷ Sales and other operating revenue
= 100 × hidden ÷ hidden = hidden

Ratio	Description	The company
Adjusted net profit margin	An indicator of profitability, calculated as adjusted net income divided by revenue.	Exxon Mobil Corp.’s adjusted net profit margin improved from 2015 to 2016 and from 2016 to 2017.

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Selected Financial Data (USD $ in millions)
	Sales and other operating revenue
	Total assets
	Ratio
	Total asset turnover¹
	Adjusted: from LIFO to FIFO
	Selected Financial Data (USD $ in millions)
	Sales and other operating revenue
	Adjusted total assets
	Ratio
	Adjusted total asset turnover²

Based on: 10-K (filing date: 2018-02-28), 10-K (filing date: 2017-02-22), 10-K (filing date: 2016-02-24), 10-K (filing date: 2015-02-25), 10-K (filing date: 2014-02-26).

2017 Calculations

¹ Total asset turnover = Sales and other operating revenue ÷ Total assets
= hidden ÷ hidden = hidden

² Adjusted total asset turnover = Sales and other operating revenue ÷ Adjusted total assets
= hidden ÷ hidden = hidden

Ratio	Description	The company
Adjusted total asset turnover	An activity ratio calculated as total revenue divided by adjusted total assets.	Exxon Mobil Corp.’s adjusted total asset turnover deteriorated from 2015 to 2016 but then slightly improved from 2016 to 2017.

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Selected Financial Data (USD $ in millions)
	Total assets
	Total ExxonMobil share of equity
	Ratio
	Financial leverage¹
	Adjusted: from LIFO to FIFO
	Selected Financial Data (USD $ in millions)
	Adjusted total assets
	Adjusted total ExxonMobil share of equity
	Ratio
	Adjusted financial leverage²

Based on: 10-K (filing date: 2018-02-28), 10-K (filing date: 2017-02-22), 10-K (filing date: 2016-02-24), 10-K (filing date: 2015-02-25), 10-K (filing date: 2014-02-26).

2017 Calculations

¹ Financial leverage = Total assets ÷ Total ExxonMobil share of equity
= hidden ÷ hidden = hidden

² Adjusted financial leverage = Adjusted total assets ÷ Adjusted total ExxonMobil share of equity
= hidden ÷ hidden = hidden

Ratio	Description	The company
Adjusted financial leverage	A measure of financial leverage calculated as adjusted total assets divided by adjusted total equity. Financial leverage is the extent to which a company can effect, through the use of debt, a proportional change in the return on common equity that is greater than a given proportional change in operating income.	Exxon Mobil Corp.’s adjusted financial leverage declined from 2015 to 2016 and from 2016 to 2017.

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Selected Financial Data (USD $ in millions)
	Net income attributable to ExxonMobil
	Total ExxonMobil share of equity
	Ratio
	ROE¹
	Adjusted: from LIFO to FIFO
	Selected Financial Data (USD $ in millions)
	Adjusted net income attributable to ExxonMobil
	Adjusted total ExxonMobil share of equity
	Ratio
	Adjusted ROE²

Based on: 10-K (filing date: 2018-02-28), 10-K (filing date: 2017-02-22), 10-K (filing date: 2016-02-24), 10-K (filing date: 2015-02-25), 10-K (filing date: 2014-02-26).

2017 Calculations

¹ ROE = 100 × Net income attributable to ExxonMobil ÷ Total ExxonMobil share of equity
= 100 × hidden ÷ hidden = hidden

² Adjusted ROE = 100 × Adjusted net income attributable to ExxonMobil ÷ Adjusted total ExxonMobil share of equity
= 100 × hidden ÷ hidden = hidden

Ratio	Description	The company
Adjusted ROE	A profitability ratio calculated as adjusted net income divided by adjusted shareholders’ equity.	Exxon Mobil Corp.’s adjusted ROE improved from 2015 to 2016 and from 2016 to 2017.

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	As Reported
	Selected Financial Data (USD $ in millions)
	Net income attributable to ExxonMobil
	Total assets
	Ratio
	ROA¹
	Adjusted: from LIFO to FIFO
	Selected Financial Data (USD $ in millions)
	Adjusted net income attributable to ExxonMobil
	Adjusted total assets
	Ratio
	Adjusted ROA²

Based on: 10-K (filing date: 2018-02-28), 10-K (filing date: 2017-02-22), 10-K (filing date: 2016-02-24), 10-K (filing date: 2015-02-25), 10-K (filing date: 2014-02-26).

2017 Calculations

¹ ROA = 100 × Net income attributable to ExxonMobil ÷ Total assets
= 100 × hidden ÷ hidden = hidden

² Adjusted ROA = 100 × Adjusted net income attributable to ExxonMobil ÷ Adjusted total assets
= 100 × hidden ÷ hidden = hidden

Ratio	Description	The company
Adjusted ROA	A profitability ratio calculated as adjusted net income divided by adjusted total assets.	Exxon Mobil Corp.’s adjusted ROA improved from 2015 to 2016 and from 2016 to 2017.

	Exxon Mobil Corp.	Other companies (not purchased previously)
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Discounted Cash Flow (DCF) Valuation
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Exxon Mobil Corp. (XOM)

Analysis of Inventory

Inventory Accounting Policy

Inventory Disclosure

Adjustment to Inventory: from LIFO to FIFO

Exxon Mobil Corp., Financial Data: Reported vs. Adjusted

Adjusted Ratios: LIFO vs. FIFO (Summary)

Exxon Mobil Corp., Ratios: Reported vs. Adjusted

Adjusted Current Ratio

Adjusted Net Profit Margin

Adjusted Total Asset Turnover

Adjusted Financial Leverage

Adjusted Return on Equity (ROE)

Adjusted Return on Assets (ROA)