v3.25.4
Commitments and Contingencies - Maturities of Operating Lease Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2025
Mar. 31, 2025
Commitments and Contingencies Disclosure [Abstract]    
2026 $ 10  
2027 10  
2028 8  
2029 7  
2030 8  
Thereafter 11  
Total undiscounted future lease obligations 54  
Less: imputed interest (5)  
Operating lease liabilities $ 49 $ 55