Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Consolidated Statement of Comprehensive Income
Net income including noncontrolling interest	$ 4,582	$ 5,363	$ 4,869
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	211	(467)	373
Defined benefit pension and postretirement plans adjustment	(560)	444	52
Cash flow hedging instruments		176	(203)
Cash flow hedging instruments	(72)
Total other comprehensive income (loss), net of tax	(421)	153	222
Comprehensive income (loss) including noncontrolling interest	4,161	5,516	5,091
Comprehensive (income) loss attributable to noncontrolling interest	(11)	(8)	(14)
Comprehensive income (loss) attributable to 3M	$ 4,150	$ 5,508	$ 5,077

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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