Consolidated Statements of Changes in Shareholders' Equity - USD ($) $ in Millions	Total	Common stock	Paid-in capital	Retained earnings	Accumulated other comprehensive loss
Beginning of year at Dec. 31, 2014		$ 199	$ 0	$ 12,392	$ (5,356)
Common stock repurchased		(19)		(3,154)
Shares issued for employee stock awards and options		1	0	29
Net earnings	$ 1,990			1,990
Dividends declared				(596)
Other comprehensive income (loss), net of tax	36				36
End of year at Dec. 31, 2015	$ 5,522	181	0	10,661	(5,320)
Cash dividends declared per share	$ 3.10
Common stock repurchased		(7)		(1,548)
Shares issued for employee stock awards and options		1	0	(50)
Net earnings	$ 2,200			2,200
Dividends declared				(633)
Other comprehensive income (loss), net of tax	(226)				(226)
End of year at Dec. 31, 2016	$ 5,259	175	0	10,630	(5,546)
Cash dividends declared per share	$ 3.50
Common stock repurchased		(2)		(371)
Shares issued for employee stock awards and options		1	44	(39)
Net earnings	$ 2,015			2,015
Dividends declared				(687)
Other comprehensive income (loss), net of tax	828				828
End of year at Dec. 31, 2017	$ 7,048	$ 174	$ 44	$ 11,548	$ (4,718)
Cash dividends declared per share	$ 3.90