Leases Maturity (Details) $ in Millions	Mar. 31, 2021 USD ($)
Leases [Abstract]
Lessee, Operating Lease, Liability, to be Paid, Remainder of Fiscal Year	$ 25
Finance Lease, Liability, to be Paid, Remainder of Fiscal Year	3
Lessee, Operating Lease, Liability, to be Paid, Year One	31
Finance Lease, Liability, to be Paid, Year One	3
Lessee, Operating Lease, Liability, to be Paid, Year Two	28
Finance Lease, Liability, to be Paid, Year Two	2
Lessee, Operating Lease, Liability, to be Paid, Year Three	27
Finance Lease, Liability, to be Paid, Year Three	0
Lessee, Operating Lease, Liability, to be Paid, Year Four	23
Finance Lease, Liability, to be Paid, Year Four	0
Lessee, Operating Lease, Liability, to be Paid, after Year Five	49
Finance Lease, Liability, to be Paid, after Year Five	0
Lessee, Operating Lease, Liability, to be Paid	183
Finance Lease, Liability, Payment, Due	8
Operating lease, Future Minimum Payments, Interest Included in Payments	(35)
Capital Leases, Future Minimum Payments, Interest Included in Payments	(1)
Operating Leases, Future Minimum Payments Due	148
Capital Leases, Future Minimum Payments Due	$ 7