Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income	$ 587	$ 525	$ 1,123	$ 993
Other Comprehensive Income (Loss):
Foreign currency translation adjustments, net of tax	117	(144)	271	20
Pension and other postretirement benefit adjustments, net of tax	10	6	20	14
Comprehensive Income	$ 714	$ 387	$ 1,414	$ 1,027