Consolidated Statements of Changes in Shareholders' Equity (USD $) In Millions, except Per Share data	Total	Common stock	Paid-in capital	Retained earnings	Accumulated other comprehensive loss
Beginning of year at Dec. 31, 2010		$ 291	$ 7,778	$ 8,124	$ (2,757)
Common stock repurchased		(40)	(2,264)
Shares issued for stock awards and options		3	236
Other comprehensive income, net of tax	(1,257)				(1,257)
Shipbuilding spin-off adjustment			(1,877)		524
Net earnings	2,118			2,118
Dividends declared				(543)
Cash dividends declared per share	$ 1.97
End of year at Dec. 31, 2011	10,336	254	3,873	9,699	(3,490)
Common stock repurchased		(21)	(1,310)
Shares issued for stock awards and options		6	359
Other comprehensive income, net of tax	(1,297)				(1,297)
Shipbuilding spin-off adjustment			2		0
Net earnings	1,978			1,978
Dividends declared				(539)
Cash dividends declared per share	$ 2.15
End of year at Dec. 31, 2012	9,514	239	2,924	11,138	(4,787)
Common stock repurchased		(27)	(2,345)
Shares issued for stock awards and options		6	274
Other comprehensive income, net of tax	1,803				1,803
Shipbuilding spin-off adjustment			(5)		0
Net earnings	1,952			1,952
Dividends declared				(552)
Cash dividends declared per share	$ 2.38
End of year at Dec. 31, 2013	$ 10,620	$ 218	$ 848	$ 12,538	$ (2,984)