Consolidated Statements of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Total Stockholders’ (Deficit) Equity	Noncontrolling Interests in Subsidiary
Beginning Balance at Dec. 31, 2014	$ 3,400	$ 314		$ 14,956	$ (11,870)	$ 3,400
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	3,605			3,605		3,605
Other comprehensive income (loss), net of tax	426				426	426
Repurchases of common stock	(3,071)	(15)	$ (656)	(2,400)		(3,071)
Dividends declared	(1,923)			(1,923)		(1,923)
Stock-based awards, ESOP activity and other	660	4	656			660
Ending Balance at Dec. 31, 2015	3,097	303		14,238	(11,444)	3,097
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	5,302			5,302		5,302
Other comprehensive income (loss), net of tax	(658)				(658)	(658)
Shares exchanged and retired in connection with divestiture of IS&GS business	(2,497)	(9)		(2,488)		(2,497)
Repurchases of common stock	(2,096)	(9)	(395)	(1,692)		(2,096)
Dividends declared	(2,036)			(2,036)		(2,036)
Stock-based awards, ESOP activity and other	399	4	395			399
Net increase in noncontrolling interests in subsidiary	95						$ 95
Ending Balance at Dec. 31, 2016	1,606	289		13,324	(12,102)	1,511	95
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	2,002			2,002		2,002
Other comprehensive income (loss), net of tax	(438)				(438)	(438)
Repurchases of common stock	(2,001)	(7)	(398)	(1,596)		(2,001)
Dividends declared	(2,157)			(2,157)		(2,157)
Stock-based awards, ESOP activity and other	400	2	$ 398			400
Net decrease in noncontrolling interests in subsidiary	(21)						(21)
Ending Balance at Dec. 31, 2017	$ (609)	$ 284		$ 11,573	$ (12,540)	$ (683)	$ 74