Commitments, Contingencies and Guarantees - Additional Information (Detail) £ in Millions, $ in Millions |
12 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2026
USD ($)
|
Mar. 31, 2025
USD ($)
|
Mar. 31, 2026
GBP (£)
|
|
| Loss Contingencies [Line Items] | |||
| Non cancelable agreements expenses | $ 38.4 | $ 25.8 | |
| Guarantor obligations, maximum exposure, undiscounted | $ 331.1 | 0.0 | |
| Guarantor Obligations, Liquidation Proceeds, Percentage | 5.10% | ||
| Maximum potential exposure | $ 26.5 | £ 20.0 | |
| Payment Guarantee [Member] | |||
| Loss Contingencies [Line Items] | |||
| Guarantor obligations, maximum exposure, undiscounted | 1,119.1 | 671.8 | |
| Financial Guarantee [Member] | |||
| Loss Contingencies [Line Items] | |||
| Guarantor obligations, maximum exposure, undiscounted | 0.0 | 129.2 | |
| Card Scheme Guarantee [Member] | |||
| Loss Contingencies [Line Items] | |||
| Guarantor obligations, maximum exposure, undiscounted | $ 20.0 | $ 10.0 | |