Consolidated Statement of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Consolidated Statement of Comprehensive Income
Net income including noncontrolling interest	$ 1,293	$ 1,303	$ 2,571	$ 2,504
Other comprehensive income (loss), net of tax:
Cumulative translation adjustment	37	23	175	(170)
Defined benefit pension and postretirement plans adjustment	67	96	136	187
Cash flow hedging instruments - unrealized gain (loss)	(27)	(32)	(137)	38
Total other comprehensive income (loss), net of tax	77	87	174	55
Comprehensive income (loss) including noncontrolling interest	1,370	1,390	2,745	2,559
Comprehensive (income) loss attributable to noncontrolling interest	(2)	(2)	(4)	(4)
Comprehensive income (loss) attributable to 3M	$ 1,368	$ 1,388	$ 2,741	$ 2,555