Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Consolidated Statement of Comprehensive Income
Net income including noncontrolling interest	$ 893	$ 606
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	77	167
Defined benefit pension and postretirement plans adjustment	84	116
Cash flow hedging instruments	6	(61)
Total other comprehensive income (loss), net of tax	167	222
Comprehensive income (loss) including noncontrolling interest	1,060	828
Comprehensive (income) loss attributable to noncontrolling interest	(2)	(3)
Comprehensive income (loss) attributable to 3M	$ 1,058	$ 825