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Accounting Policies and Basis of Presentations (Details) - USD ($) $ in Millions		3 Months Ended
	Jan. 05, 2018	Mar. 31, 2018	Apr. 01, 2017	Dec. 31, 2017
Accounting Policies and Basis of Presentation
Retained earnings		$ 3,787		$ 3,750
Selling, general and administrative expenses		75	$ 70
Miscellaneous, net		1	(2)
Accumulated other comprehensive loss		(370)		$ (354)
Supplemental Non-Cash Transaction
Note payable	$ 46
Contingent consideration	$ 14
ASU 2014-09 \| Adjustments \| Maximum
Accounting Policies and Basis of Presentation
Retained earnings		1
ASU 2017-07
Accounting Policies and Basis of Presentation
Selling, general and administrative expenses			(2)
Miscellaneous, net			$ 2
ASU 2016-01
Accounting Policies and Basis of Presentation
Retained earnings		7
Accumulated other comprehensive loss		$ (7)