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, 2012		$ 67	$ 1,505	$ 17,387	$ 2,715	$ (5,696)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options			50
Share-based compensation			32
Net earnings	$ 3,158			3,158
Dividends to shareholders ($1.58 per share in 2015, $1.50 per share in 2014 and $1.42 per share in 2013)				(660)
Unrealized foreign currency translation gains (losses) during period, net of income taxes					(1,838)
Unrealized gains (losses) on investment securities during the period, net of income taxes and reclassification adjustments					(1,535)
Unrealized gains (losses) on derivatives during period, net of income taxes					(7)
Pension liability adjustment during period, net of income taxes					102
Purchases of treasury stock						(813)
Treasury stock reissued			57			96
Balance, end of period at Dec. 31, 2013	14,620	67	1,644	19,885	(563)	(6,413)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options			29
Share-based compensation			(3)
Net earnings	2,951			2,951
Dividends to shareholders ($1.58 per share in 2015, $1.50 per share in 2014 and $1.42 per share in 2013)				(680)
Unrealized foreign currency translation gains (losses) during period, net of income taxes					(1,036)
Unrealized gains (losses) on investment securities during the period, net of income taxes and reclassification adjustments					3,637
Unrealized gains (losses) on derivatives during period, net of income taxes					(14)
Pension liability adjustment during period, net of income taxes					(45)
Purchases of treasury stock						(1,210)
Treasury stock reissued			41			57
Balance, end 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			43
Share-based compensation			36
Net earnings	2,533			2,533
Dividends to shareholders ($1.58 per share in 2015, $1.50 per share in 2014 and $1.42 per share in 2013)				(682)
Unrealized foreign currency translation gains (losses) during period, net of income taxes					345
Unrealized gains (losses) on investment securities during the period, net of income taxes and reclassification adjustments					(1,686)
Unrealized gains (losses) on derivatives during period, net of income taxes					0
Pension liability adjustment during period, net of income taxes					(13)
Purchases of treasury stock						(1,315)
Treasury stock reissued			38			62
Balance, end of period at Dec. 31, 2015	$ 17,708	$ 67	$ 1,828	$ 24,007	$ 625	$ (8,819)