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Leases - Operating Subleases (Details)
$ in Millions
Jun. 30, 2021
USD ($)
Lessor, Operating Lease, Payments, Fiscal Year Maturity [Abstract]  
July 1 - December 31, 2021 $ 14
Year ended December 31, 2022 28
Year ended December 31, 2023 28
Year ended December 31, 2024 21
2024 and thereafter 20
Total $ 111