Schedule of Leased Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease assets	$ 83	$ 107
Finance lease assets	25	25
Total right of use assets	108	132
Operating Lease, Liability, Current	24	24
Finance Lease, Liability, Current	4	3
Operating lease liabilities	76	88
Finance Lease, Liability, Noncurrent	23	22
Total lease liabilities	$ 127	$ 137