Derivative Financial Instruments, Fair Value on Consolidated Balance Sheet (Details) $ in Millions	3 Months Ended
	Mar. 29, 2019 USD ($)	Mar. 30, 2018 USD ($)	Jan. 31, 2019 USD ($) treasury_lock_contract	Dec. 31, 2018 USD ($)
Derivatives, Fair Value [Line Items]
Pre-tax gain on foreign currency forward contracts	$ 1	$ 1
Estimated net amount of existing gains expected to be reclassified into income within the next 12 months	5
Deferred hedging losses, net of tax	12
Foreign Currency Forward Contracts [Member]
Derivatives, Fair Value [Line Items]
Notional amounts	386
Treasury Lock Contracts [Member]
Derivatives, Fair Value [Line Items]
Number of derivative instruments held | treasury_lock_contract			2
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	2			$ 1
Other Current Assets [Member] | Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	2			1
Other Current Assets [Member] | Treasury Lock Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	0			0
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	1			0
Other Assets [Member] | Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	1			0
Other Assets [Member] | Treasury Lock Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, assets	0			0
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	7			13
Other Current Liabilities [Member] | Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	7			13
Other Current Liabilities [Member] | Treasury Lock Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	0			0
Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	18			4
Other Liabilities [Member] | Foreign Currency Forward Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	2			4
Other Liabilities [Member] | Treasury Lock Contracts [Member] | Designated as Hedging Instruments [Member]
Derivatives, Fair Value [Line Items]
Total derivative instruments, liabilities	16			0
Subsidiaries [Member]
Derivatives, Fair Value [Line Items]
Principal amount of long-term debt	3,350			3,350
Subsidiaries [Member] | Senior Notes [Member] | 4.95% Senior Notes due 2021 [Member]
Derivatives, Fair Value [Line Items]
Principal amount of long-term debt	$ 650		$ 650	$ 650