Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Millions	Total	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock/ Additional Paid- in-Capital	Common Stock	Non- Controlling Interests
Beginning balance at Dec. 31, 2015	$ 5,674	$ 6,722	$ (2,332)	$ 242	$ 111	$ 931
Comprehensive income
Net earnings (loss)	928	888				40
Other comprehensive income (loss)	(68)		(68)			0
Comprehensive income	860	888	(68)			40
Stock repurchased	(506)			(494)		(12)
Dividends declared	(300)	(296)				(4)
Ending balance at Dec. 31, 2016	5,728	7,314	(2,400)	(252)	111	955
Comprehensive income
Net earnings (loss)	337	350				(13)
Other comprehensive income (loss)	69		69			0
Comprehensive income	406	350	69			(13)
Stock repurchased	(682)			(683)	1	0
Dividends declared	(324)	(312)				(12)
Ending balance at Dec. 31, 2017	5,128	7,352	(2,331)	(935)	112	930
Comprehensive income
Net earnings (loss)	(159)	(183)				24
Other comprehensive income (loss)	(345)		(347)			2
Comprehensive income	(504)	(183)	(347)			26
Stock repurchased	(1,160)			(1,124)		(36)
Dividends declared	(314)	(308)				(6)
Ending balance at Dec. 31, 2018	$ 3,205	$ 6,933	$ (2,695)	$ (2,059)	$ 112	$ 914