Consolidated Statements of Shareholders' Equity - USD ($) $ in Millions	Total	Common stock:	Additional paid-in capital:	Retained earnings:	Accumulated other comprehensive income (loss):	Treasury stock:
Balance, beginning of period at Dec. 31, 2013		$ 67	$ 1,644	$ 19,885	$ (563)	$ (6,413)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options			24
Share-based compensation			27
Net earnings	$ 2,248			2,248
Dividends to shareholders				(505)
Unrealized foreign currency translation gains (losses) during period, net of income taxes					(300)
Unrealized gains (losses) on investment securities during period, net of income taxes and reclassification adjustments					2,367
Unrealized gains (losses) on derivatives during period, net of income taxes					(5)
Pension liability adjustment during period, net of income taxes					1
Purchases of treasury stock						(698)
Treasury stock reissued			31			43
Balance, end of period at Sep. 30, 2014	17,853	67	1,726	21,628	1,500	(7,068)
Balance, beginning of period at Dec. 31, 2014	18,347	67	1,711	22,156	1,979	(7,566)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options			41
Share-based compensation			27
Net earnings	1,803			1,803
Dividends to shareholders				(508)
Unrealized foreign currency translation gains (losses) during period, net of income taxes					8
Unrealized gains (losses) on investment securities during period, net of income taxes and reclassification adjustments					(1,458)
Unrealized gains (losses) on derivatives during period, net of income taxes					(2)
Pension liability adjustment during period, net of income taxes					1
Purchases of treasury stock						(1,081)
Treasury stock reissued			28			49
Balance, end of period at Sep. 30, 2015	$ 17,255	$ 67	$ 1,807	$ 23,451	$ 528	$ (8,598)