Supplemental Equity and Comprehensive Income Information (Tables)

12 Months Ended

Dec. 31, 2015

Supplemental Equity and Comprehensive Income Information

Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M

Changes in Accumulated Other Comprehensive Income (Loss) Attributable to 3M by Component

			Defined Benefit		Debt and		Cash Flow		Accumulated
			Pension and		Equity		Hedging		Other
	Cumulative		Postretirement		Securities,		Instruments,		Comprehensive
	Translation		Plans		Unrealized		Unrealized		Income
(Millions)	Adjustment		Adjustment		Gain (Loss)		Gain (Loss)		(Loss)
Balance at December 31, 2012, net of tax:	$	230	$	(4,955)	$	(2)	$	(23)	$	(4,750)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(462)		1,361		—		(98)		801
Amounts reclassified out		—		569		—		122		691
Total other comprehensive income (loss), before tax		(462)		1,930		—		24		1,492
Tax effect		44		(690)		—		(9)		(655)
Total other comprehensive income (loss), net of tax		(418)		1,240		—		15		837
Balance at December 31, 2013, net of tax:	$	(188)	$	(3,715)	$	(2)	$	(8)	$	(3,913)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(856)		(2,638)		2		171		(3,321)
Amounts reclassified out		—		360		1		(4)		357
Total other comprehensive income (loss), before tax		(856)		(2,278)		3		167		(2,964)
Tax effect		(92)		716		(1)		(60)		563
Total other comprehensive income (loss), net of tax		(948)		(1,562)		2		107		(2,401)
Impact from purchase of subsidiary shares		41		(16)		—		—		25
Balance at December 31, 2014, net of tax	$	(1,095)	$	(5,293)	$	—	$	99	$	(6,289)
Other comprehensive income (loss), before tax:
Amounts before reclassifications		(447)		367		—		212		132
Amounts reclassified out		—		537		—		(174)		363
Total other comprehensive income (loss), before tax		(447)		904		—		38		495
Tax effect		(137)		(415)		—		(13)		(565)
Total other comprehensive income (loss), net of tax		(584)		489		—		25		(70)
Balance at December 31, 2015, net of tax:	$	(1,679)	$	(4,804)	$	—	$	124	$	(6,359)

Reclassifications Out of Accumulated Other Comprehensive Income

Reclassifications out of Accumulated Other Comprehensive Income Attributable to 3M

	Amounts Reclassified from
	Accumulated Other Comprehensive Income
(Millions)	Year ended		Year ended		Year ended
Details about Accumulated Other	December 31,		December 31,		December 31,		Location on Income
Comprehensive Income Components	2015		2014		2013		Statement
Gains (losses) associated with, defined benefit pension and postretirement plans amortization
Transition asset	$	1	$	1	$	1	See Note 11
Prior service benefit		79		59		77	See Note 11
Net actuarial loss		(626)		(420)		(647)	See Note 11
Curtailments/Settlements		9		—		—	See Note 11
Total before tax		(537)		(360)		(569)
Tax effect		176		122		197	Provision for income taxes
Net of tax	$	(361)	$	(238)	$	(372)
Debt and equity security gains (losses)
Sales or impairments of securities	$	—	$	(1)	$	—	Selling, general and administrative expenses
Total before tax		—		(1)		—
Tax effect		—		—		—	Provision for income taxes
Net of tax	$	—	$	(1)	$	—
Cash flow hedging instruments gains (losses)
Foreign currency forward/option contracts	$	178	$	3	$	(11)	Cost of sales
Foreign currency forward contracts		—		—		(108)	Interest expense
Commodity price swap contracts		(2)		2		(2)	Cost of sales
Interest rate swap contracts		(2)		(1)		(1)	Interest expense
Total before tax		174		4		(122)
Tax effect		(63)		(1)		45	Provision for income taxes
Net of tax	$	111	$	3	$	(77)
Total reclassifications for the period, net of tax	$	(250)	$	(236)	$	(449)

Effect of purchase of subsidiary shares on equity attributable to 3M Company shareholders

The following table summarizes the effects of these 2014 transactions on equity attributable to 3M Company shareholders:

	Year ended
(Millions)	December 31, 2014
Net income attributable to 3M	$	4,956
Impact of purchase of subsidiary shares		(409)
Change in 3M Company shareholders’ equity from net income
attributable to 3M and impact of purchase of subsidiary shares	$	4,547