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, 2017		$ 174	$ 44	$ 6,913	$ 1
Impact from adoption of ASU 2018-02 and ASU 2016-01				(21)	21
Common stock repurchased		(4)	(34)	(1,225)
Shares issued for employee stock awards and options		1	(10)	(6)
Other	$ 0		0
Net earnings	3,229			3,229
Dividends declared				(822)
Other comprehensive loss, net of tax	(74)				(74)
End of year at Dec. 31, 2018	$ 8,187	171	0	8,068	(52)
Cash dividends declared per share	$ 4.70
Impact from adoption of ASU 2018-02 and ASU 2016-01				0	0
Common stock repurchased		(3)	0	(751)
Shares issued for employee stock awards and options		0	0	63
Other	$ 0		0
Net earnings	2,248			2,248
Dividends declared				(880)
Other comprehensive loss, net of tax	(45)				(45)
End of year at Dec. 31, 2019	$ 8,819	168	0	8,748	(97)
Cash dividends declared per share	$ 5.16
Impact from adoption of ASU 2018-02 and ASU 2016-01				0	0
Common stock repurchased		(1)	0	(479)
Shares issued for employee stock awards and options		0	63	(36)
Other	$ 11		(5)
Net earnings	3,189			3,189
Dividends declared				(951)
Other comprehensive loss, net of tax	(31)				(31)
End of year at Dec. 31, 2020	$ 10,579	$ 167	$ 58	$ 10,482	$ (128)
Cash dividends declared per share	$ 5.67