Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Consolidated Statement of Comprehensive Income
Net income including noncontrolling interest	$ 1,546	$ 1,433	$ 4,014	$ 4,344
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	(112)	44	(441)	269
Defined benefit pension and postretirement plans adjustment	114	80	344	241
Cash flow hedging instruments unrealized gain (loss)	46	(49)	147	(176)
Total other comprehensive income (loss), net of tax	48	75	50	334
Comprehensive income (loss) including noncontrolling interest	1,594	1,508	4,064	4,678
Comprehensive (income) loss attributable to noncontrolling interest		(3)	(4)	(11)
Comprehensive income (loss) attributable to 3M	$ 1,594	$ 1,505	$ 4,060	$ 4,667

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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