Statement of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Net Income	$ 535	$ 511	$ 1,528	$ 1,449
Other Comprehensive Income (Loss):
Foreign currency translation adjustments, net of tax	(5)	(335)	15	(743)
Pension and other postretirement benefit adjustments, net of tax	7	11	21	31
Comprehensive Income (Loss)	$ 537	$ 187	$ 1,564	$ 737