Schedule of Leased Assets and Liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease assets	$ 91	$ 107
Finance lease assets	22	25
Total right of use assets	113	132
Operating Lease, Liability, Current	23	24
Finance Lease, Liability, Current	3	3
Operating lease liabilities	76	88
Finance Lease, Liability, Noncurrent	21	22
Total lease liabilities	$ 123	$ 137