Lessee - Operating Lease ROU Asset, Net and Operating Lease Liabilities (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease, Other long-term assets	$ 319	$ 319
Operating lease, Accrued expenses and other current liabilities	86	87
Operating lease, Other long-term liabilities	262	260
Total Operating lease liabilities	$ 348	$ 347