CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Tax effect of foreign currency translation adjustments arising during the period	$ (2)	$ (5)
Tax effect of available-for-sale securities arising during the period	0	(6)
Tax effect of qualifying derivatives arising during the period	(15)	4
Tax effect of defined benefit plans - net actuarial gain (loss) arising during period	0	0
Tax effect of available-for-sale securities reclassified from accumulated other comprehensive income (loss)	0	1
Tax effect of qualifying derivatives reclassified from accumulated other comprehensive income (loss)	19	4
Tax effect of equity investees' other comprehensive income (loss) reclassified from accumulated other comprehensive income (loss)	0	(1)
Tax effect of net actuarial loss reclassified from accumulated other comprehensive income (loss)	$ (9)	$ (13)