Accounting Policies and Basis of Presentations (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 27, 2020	Jun. 29, 2019	Jun. 27, 2020	Jun. 29, 2019	Jan. 01, 2020	Dec. 31, 2019
Supplemental Cash Flow Information
Operating cash flows from operating leases	$ 36	$ 35	$ 71	$ 67
Operating cash flows from finance leases	1	1	2	1
Financing cash flows from finance leases	2		3
Operating lease assets obtained in exchange for new operating lease liabilities	5	12	43	42
Finance right of use assets obtained in exchange for new finance lease liabilities	$ 19	$ 16	$ 27	$ 17
Leases
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:PropertyPlantAndEquipmentNet		us-gaap:PropertyPlantAndEquipmentNet
Finance lease right of use assets, net	$ 74		$ 74			$ 50
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other Liabilities, Current		Other Liabilities, Current
Finance lease liabilities	$ 7		$ 7			5
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other Liabilities, Noncurrent		Other Liabilities, Noncurrent
Non-current finance lease liabilities	$ 62		$ 62			40
Goodwill and Other Intangible Assets
Intangible assets, net	55		55
Accumulated amortization	12		12
Amortization of intangible assets	2		4
Foreign currency exchange adjustments	0		(1)
Recently issued accounting standards
Retained earnings	3,833		3,833			3,983
Allowance for credit losses	$ 30		30			$ 28
ASU 2016-13
Recently issued accounting standards
Retained earnings					$ (3)
Allowance for credit losses					$ 3
CT&M
Goodwill and Other Intangible Assets
Acquisition related goodwill adjustment			$ (1)