Commitments and Contingencies - Summary of Commitments under Operating Lease Agreements (Details) - USD ($) $ in Millions	Mar. 31, 2020	Mar. 31, 2019
Amounts due on operating lease liabilities
2021	$ 21
2022	23
2023	15
2024	12
2025	10
Thereafter	58
Total	139
Present value discount	(19)
Total operating lease liability	$ 120
Future minimum lease payments as of March 31, 2019
2020		$ 22
2021		19
2022		20
2023		12
2024		10
Thereafter		61
Total		$ 144

Amount of lessee's undiscounted obligation for lease payments for operating lease.

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