3M Co. (MMM)

Cash and cash equivalents

Cash and cash equivalents consist of cash and temporary investments with maturities of three months or less when acquired.

Marketable securities

Marketable securities include available-for-sale debt securities and are recorded at fair value. Cost of securities sold use the first in, first out (FIFO) method. The classification of marketable securities as current or non-current is based on the availability for use in current operations. 3M reviews impairments associated with its marketable securities in accordance with the measurement guidance provided by ASC 320, Investments-Debt and Equity Securities, when determining the classification of the impairment as "temporary" or "other-than-temporary". A temporary impairment charge results in an unrealized loss being recorded in accumulated other comprehensive income as a component of shareholders' equity. Such an unrealized loss does not reduce net income for the applicable accounting period because the loss is not viewed as other-than-temporary. The factors evaluated to differentiate between temporary and other-than-temporary include the projected future cash flows, credit ratings actions, and assessment of the credit quality of the underlying collateral, as well as other factors. Amounts are reclassified out of accumulated other comprehensive income and into earnings upon sale or "other-than-temporary" impairment.

Investments

Investments primarily include equity method, cost method, and available-for-sale equity investments. Available-for-sale investments are recorded at fair value at each reporting date and subject to ASC 320, as described above.

Source: 10-K (filing date: 2018-02-08).

3M Co., adjustment to Net Income Attributable To 3M

USD $ in millions

	12 months ended	Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	Net income attributable to 3M (as reported)
	Add: Debt and equity securities, unrealized gain (loss)
	Net income attributable to 3M (adjusted)

Based on: 10-K (filing date: 2018-02-08), 10-K (filing date: 2017-02-09), 10-K (filing date: 2016-02-11), 10-K (filing date: 2015-02-12), 10-K (filing date: 2014-02-13).

3M Co., adjusted ratios

		Dec 31, 2017	Dec 31, 2016	Dec 31, 2015	Dec 31, 2014	Dec 31, 2013
	Net Profit Margin
	Reported net profit margin
	Adjusted net profit margin
	Return on Equity (ROE)
	Reported ROE
	Adjusted ROE
	Return on Assets (ROA)
	Reported ROA
	Adjusted ROA

Based on: 10-K (filing date: 2018-02-08), 10-K (filing date: 2017-02-09), 10-K (filing date: 2016-02-11), 10-K (filing date: 2015-02-12), 10-K (filing date: 2014-02-13).

3M Co., 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)
	Net income attributable to 3M
	Net sales
	Ratio
	Net profit margin1
	Adjusted: Mark to Market Available-for-sale Securities
	Selected Financial Data (USD $ in millions)
	Adjusted net income attributable to 3M
	Net sales
	Ratio
	Adjusted net profit margin2

Based on: 10-K (filing date: 2018-02-08), 10-K (filing date: 2017-02-09), 10-K (filing date: 2016-02-11), 10-K (filing date: 2015-02-12), 10-K (filing date: 2014-02-13).

2017 Calculations

		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 3M
	Total 3M Company shareholders' equity
	Ratio
	ROE1
	Adjusted: Mark to Market Available-for-sale Securities
	Selected Financial Data (USD $ in millions)
	Adjusted net income attributable to 3M
	Total 3M Company shareholders' equity
	Ratio
	Adjusted ROE2

Based on: 10-K (filing date: 2018-02-08), 10-K (filing date: 2017-02-09), 10-K (filing date: 2016-02-11), 10-K (filing date: 2015-02-12), 10-K (filing date: 2014-02-13).

2017 Calculations

		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 3M
	Total assets
	Ratio
	ROA1
	Adjusted: Mark to Market Available-for-sale Securities
	Selected Financial Data (USD $ in millions)
	Adjusted net income attributable to 3M
	Total assets
	Ratio
	Adjusted ROA2

Based on: 10-K (filing date: 2018-02-08), 10-K (filing date: 2017-02-09), 10-K (filing date: 2016-02-11), 10-K (filing date: 2015-02-12), 10-K (filing date: 2014-02-13).

2017 Calculations