Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Common Stock	Accumulated Other Comprehensive Loss	Retained Earnings	Noncontrolling Interest	Total
Balances at Dec. 31, 2017	$ 1	$ (354)	$ 3,750	$ 11	$ 3,408
Increase (Decrease) in Stockholders' Equity
Addition to noncontrolling interests				4	4
Comprehensive income (loss):
Net earnings			32		32
Other comprehensive loss, net of tax		(9)			(9)
Dividends on common stock ($1.50/share and $2.25/share)			(2)		(2)
Balances at Mar. 31, 2018	1	(370)	3,787	15	3,433
Increase (Decrease) in Stockholders' Equity
Adoption of accounting guidance | ASU 2016-01		(7)	7
Balances at Dec. 31, 2018	1	(410)	3,727	11	3,329
Increase (Decrease) in Stockholders' Equity
Reduction to noncontrolling interests				(1)	(1)
Comprehensive income (loss):
Net earnings			57		57
Other comprehensive loss, net of tax		1			1
Repurchase of common stock			(13)		(13)
Dividends on common stock ($1.50/share and $2.25/share)			(3)		(3)
Balances at Mar. 30, 2019	$ 1	$ (409)	$ 3,768	$ 10	$ 3,370