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Goodwill and Intangible Assets, Net - Schedule of Information Regarding Intangible Assets (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Mar. 31, 2023
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Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying Amount | $ 5,384 | $ 5,398
Accumulated Amortization | (3,242) | (3,121)
Net Carrying Amount | $ 2,142 | 2,277
Customer relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted- Average Remaining Amortization Period (Years) | 11 years |
Gross Carrying Amount | $ 2,970 | 2,971
Accumulated Amortization | (1,823) | (1,765)
Net Carrying Amount | $ 1,147 | 1,206
Service agreements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted- Average Remaining Amortization Period (Years) | 10 years |
Gross Carrying Amount | $ 1,135 | 1,137
Accumulated Amortization | (654) | (623)
Net Carrying Amount | $ 481 | 514
Trademarks and trade names |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted- Average Remaining Amortization Period (Years) | 12 years |
Gross Carrying Amount | $ 831 | 833
Accumulated Amortization | (453) | (430)
Net Carrying Amount | $ 378 | 403
Technology |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted- Average Remaining Amortization Period (Years) | 10 years |
Gross Carrying Amount | $ 264 | 264
Accumulated Amortization | (137) | (129)
Net Carrying Amount | $ 127 | 135
Other |  |
Finite-Lived Intangible Assets [Line Items] |  |
Weighted- Average Remaining Amortization Period (Years) | 6 years |
Gross Carrying Amount | $ 184 | 193
Accumulated Amortization | (175) | (174)
Net Carrying Amount | $ 9 | $ 19

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