Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions |
9 Months Ended | |
|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
|
| Operating Leases, Supplemental Cash Flow Information [Abstract] | ||
| Cash paid for amounts included in the measurement of operating lease liabilities – operating cash flows | $ 311 | $ 371 |
| ROU assets obtained in exchange for lease, net | 193 | 130 |
| Change in lease classification from operating to finance lease | 911 | 792 |
| Finance Leases, Supplemental Cash Flow Information [Abstract] | ||
| Interest paid for finance lease liabilities – Operating cash flows | 13 | 22 |
| Cash paid for amounts included in the measurement of finance lease obligations – financing cash flows | 244 | 403 |
| Total cash paid in the measurement of finance lease obligations | 257 | 425 |
| Capital expenditures through finance lease obligations | $ 73 | $ 180 |