Consolidated Statements Of Equity (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Statement of Stockholders' Equity [Abstract]
Other Comprehensive Income (loss), Tax	$ (686)	$ 2,199	$ (4,246)
Cash dividends declared, per share	$ 3.82	$ 3.10	$ 2.185