Leases Future Minimum Lease Payments (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating and Finance Leases [Abstract]
Lessee, Operating Lease, Liability, Payments, Remainder of Fiscal Year	$ 21	[1]
Finance Lease, Liability, Payments, Remainder of Fiscal Year	16	[2]
Lessee, Operating Lease, Liability, Payments, Due Year Two	22	[1]
Finance Lease, Liability, Payments, Due Year Two	16	[2]
Lessee, Operating Lease, Liability, Payments, Due Year Three	20	[1]
Finance Lease, Liability, Payments, Due Year Three	15	[2]
Lessee, Operating Lease, Liability, Payments, Due Year Four	19	[1]
Finance Lease, Liability, Payments, Due Year Four	19	[2]
Lessee, Operating Lease, Liability, Payments, Due Year Five	18	[1]
Finance Lease, Liability, Payments, Due Year Five	8	[2]
Lessee, Operating Lease, Liability, Payments, Due after Year Five	185	[1]
Finance Lease, Liability, Payments, Due after Year Five	26	[2]
Lessee, Operating Lease, Liability, Payments, Due	285	[1]
Finance Lease, Liability, Payment, Due	100	[2]
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	103	[1]
Finance Lease, Liability, Undiscounted Excess Amount	27	[2]
Operating Lease, Liability	182	[1]
Finance Lease, Liability	73	[2]
Operating Lease, Liability, Current	12	[1]
Finance Lease, Liability, Current	10	[2]
Operating Lease, Liability, Noncurrent	170	[1]
Finance Lease, Liability, Noncurrent	$ 63	[2]

[1] The lease liabilities associated with our operating leases as of December 31, 2019 are included in other current liabilities and other long-term liabilities on our Consolidated Balance Sheet.

[2] The lease liabilities associated with our finance leases as of December 31, 2019 are included in debt, current portion and debt, net of current portion on our Consolidated Balance Sheet.