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Goodwill and Intangible Assets, Net - Intangible Assets Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract]      
Amortization expense of intangible assets $ 332 $ 422 $ 462
Estimated annual amortization expense, 2023 225    
Estimated annual amortization expense, 2024 214    
Estimated annual amortization expense, 2025 208    
Estimated annual amortization expense, 2026 177    
Estimated annual amortization expense, 2027 171    
Estimated annual amortization expense, after 2028 $ 1,100