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Debt - Schedule of Future Debt Principal Repayments (Details) - USD ($) $ in Millions	Mar. 31, 2025	Mar. 31, 2024
Interest on indebtedness
Total	$ 1,105
2026	194
2027	206
2028	159
2029	111
2030	87
Thereafter	348
Total
Total	5,131
2026	277
2027	289
2028	1,519
2029	811
2030	587
Thereafter	1,648
Term Loan A
Long-term debt, gross
Total	1,526
2026	83
2027	83
2028	1,360
2029	0
2030	0
Thereafter	0
Senior Notes | Senior Notes due 2028
Long-term debt, gross
Total	700	$ 700
2026	0
2027	0
2028	0
2029	700
2030	0
Thereafter	0
Senior Notes | Senior Notes due 2029
Long-term debt, gross
Total	500	500
2026	0
2027	0
2028	0
2029	0
2030	500
Thereafter	0
Senior Notes | Senior Notes due 2033
Long-term debt, gross
Total	650	650
2026	0
2027	0
2028	0
2029	0
2030	0
Thereafter	650
Senior Notes | Senior Notes due 2035
Long-term debt, gross
Total	650	$ 0
2026	0
2027	0
2028	0
2029	0
2030	0
Thereafter	$ 650

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