Leases - Schedule of Right of Use Assets (Details) $ in Millions	Mar. 31, 2020 USD ($)
Lessee, Lease, Description [Line Items]
Total right-of-use assets	$ 23
Buildings
Lessee, Lease, Description [Line Items]
Total right-of-use assets	21
Land
Lessee, Lease, Description [Line Items]
Total right-of-use assets	1
Vehicles
Lessee, Lease, Description [Line Items]
Total right-of-use assets	$ 1