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Revenue from Contracts with Customers - Schedule of Operating Lease Income (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Revenue from Contract with Customer [Abstract]        
Rental revenue $ 25 $ 16 $ 44 $ 30