Condensed Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Common Stock	Accumulated Other Comprehensive Loss	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Retained Earnings	Noncontrolling Interest	Cumulative Effect, Period of Adoption, Adjustment	Total
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 income (loss), net of tax		1					1
Repurchase of common stock				(13)			(13)
Dividends on common stock				(3)			(3)
Balances at Mar. 30, 2019	1	(409)		3,768	10		3,370
Balances at Dec. 31, 2018	1	(410)		3,727	11		3,329
Comprehensive income (loss):
Net earnings							108
Other comprehensive income (loss), net of tax							(2)
Balances at Sep. 28, 2019	1	(412)		3,811	10		3,410
Balances at Mar. 30, 2019	1	(409)		3,768	10		3,370
Comprehensive income (loss):
Net earnings				58			58
Other comprehensive income (loss), net of tax		(6)					(6)
Repurchase of common stock				(1)			(1)
Dividends on common stock				(2)			(2)
Balances at Jun. 29, 2019	1	(415)		3,823	10		3,419
Comprehensive income (loss):
Net earnings				(7)			(7)
Other comprehensive income (loss), net of tax		3					3
Repurchase of common stock				(3)			(3)
Dividends on common stock				(2)			(2)
Balances at Sep. 28, 2019	1	(412)		3,811	10		3,410
Balances at Dec. 31, 2019	1	(440)	$ (3)	3,983	10	$ (3)	3,554
Comprehensive income (loss):
Net earnings				(103)			(103)
Other comprehensive income (loss), net of tax		5					5
Repurchase of common stock				(13)			(13)
Dividends on common stock				(3)			(3)
Balances at Mar. 28, 2020	1	(435)		3,861	10		3,437
Balances at Dec. 31, 2019	1	(440)	$ (3)	3,983	10	$ (3)	3,554
Comprehensive income (loss):
Net earnings							18
Other comprehensive income (loss), net of tax							(4)
Balances at Sep. 26, 2020	1	(444)		3,978	10		3,545
Balances at Mar. 28, 2020	1	(435)		3,861	10		3,437
Comprehensive income (loss):
Net earnings				(26)			(26)
Other comprehensive income (loss), net of tax		(19)					(19)
Dividends on common stock				(2)			(2)
Balances at Jun. 27, 2020	1	(454)		3,833	10		3,390
Comprehensive income (loss):
Net earnings				147			147
Other comprehensive income (loss), net of tax		10					10
Dividends on common stock				(2)			(2)
Balances at Sep. 26, 2020	$ 1	$ (444)		$ 3,978	$ 10		$ 3,545