Schedule of Leased Assets and Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease assets	$ 98	$ 107
Finance lease assets	21	25
Total right of use assets	119	132
Operating Lease, Liability, Current	23	24
Finance Lease, Liability, Current	3	3
Operating lease liabilities	83	88
Finance Lease, Liability, Noncurrent	21	22
Total lease liabilities	$ 130	$ 137