Consolidated Statements of Shareholders' Equity (USD $) In Millions, unless otherwise specified	Total	Common stock:	Additional paid-in capital:	Retained earnings:	Accumulated other comprehensive income (loss):	Treasury stock:
Balance, beginning of period at Dec. 31, 2009		$ 66	$ 1,228	$ 12,019	$ (38)	$ (5,316)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		0	59
Share-based compensation			37
Cumulative effect of change in accounting principle, net of income taxes				(25)
Net earnings	2,328			2,328
Dividends to shareholders				(535)
Unrealized foreign currency translation gains (losses) during period, net of income taxes:
Cumulative effect of change in accounting principal, net of income taxes					(320)
Change in unrealized foreign currency translation gains (losses) during period, net of income taxes					428
Unrealized gains (losses) on investment securities during period, net of income taxes and reclassification adjustments:
Cumulative effect of change in accounting principle, net of income taxes					180
Change in unrealized gains (losses) on investment securities not other-than-temporarily impaired, net of income taxes					478
Change in unrealized gains (losses) on other-than-temporarily impaired investment securities, net of income taxes					(13)
Unrealized gains (losses) on derivatives during period, net of income taxes					33
Pension liability adjustment during period, net of income taxes					(21)
Purchases of treasury stock						(121)
Treasury stock reissued			(4)			51
Balance, end of period at Dec. 31, 2010	10,540	66	1,320	13,787	753	(5,386)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		0	21
Share-based compensation			37
Cumulative effect of change in accounting principle, net of income taxes				0
Net earnings	1,937			1,937
Dividends to shareholders				(576)
Unrealized foreign currency translation gains (losses) during period, net of income taxes:
Cumulative effect of change in accounting principal, net of income taxes					0
Change in unrealized foreign currency translation gains (losses) during period, net of income taxes					167
Unrealized gains (losses) on investment securities during period, net of income taxes and reclassification adjustments:
Cumulative effect of change in accounting principle, net of income taxes					0
Change in unrealized gains (losses) on investment securities not other-than-temporarily impaired, net of income taxes					1,107
Change in unrealized gains (losses) on other-than-temporarily impaired investment securities, net of income taxes					(3)
Unrealized gains (losses) on derivatives during period, net of income taxes					(22)
Pension liability adjustment during period, net of income taxes					(43)
Purchases of treasury stock						(308)
Treasury stock reissued			30			53
Balance, end of period at Dec. 31, 2011	12,946	66	1,408	15,148	1,965	(5,641)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options		1	31
Share-based compensation			34
Cumulative effect of change in accounting principle, net of income taxes				0
Net earnings	2,866			2,866
Dividends to shareholders				(627)
Unrealized foreign currency translation gains (losses) during period, net of income taxes:
Cumulative effect of change in accounting principal, net of income taxes					0
Change in unrealized foreign currency translation gains (losses) during period, net of income taxes					(651)
Unrealized gains (losses) on investment securities during period, net of income taxes and reclassification adjustments:
Cumulative effect of change in accounting principle, net of income taxes					0
Change in unrealized gains (losses) on investment securities not other-than-temporarily impaired, net of income taxes					1,427
Change in unrealized gains (losses) on other-than-temporarily impaired investment securities, net of income taxes					0
Unrealized gains (losses) on derivatives during period, net of income taxes					(14)
Pension liability adjustment during period, net of income taxes					(12)
Purchases of treasury stock						(118)
Treasury stock reissued			32			63
Balance, end of period at Dec. 31, 2012	$ 15,978	$ 67	$ 1,505	$ 17,387	$ 2,715	$ (5,696)