Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Consolidated Statement of Comprehensive Income
Net income including noncontrolling interest	$ 1,585	$ 1,293	$ 2,911	$ 2,571
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	(67)	37	225	175
Defined benefit pension and postretirement plans adjustment	78	67	161	136
Cash flow hedging instruments - unrealized gain (loss)	(51)	(27)	(127)	(137)
Total other comprehensive income (loss), net of tax	(40)	77	259	174
Comprehensive income (loss) including noncontrolling interest	1,545	1,370	3,170	2,745
Comprehensive (income) loss attributable to noncontrolling interest	(2)	(2)	(8)	(4)
Comprehensive income (loss) attributable to 3M	$ 1,543	$ 1,368	$ 3,162	$ 2,741