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Summary of Significant Accounting Policies (Tables)
12 Months Ended
Mar. 31, 2025
Accounting Policies [Abstract]  
Schedule of Useful Lives
Property and equipment, net, are stated at cost. Depreciation is calculated using the straight-line method over the following useful lives:
Buildings  
20 to 25 years
Computer equipment and software  
2 to 6 years
Equipment, furniture and fixtures, and other  
3 to 5 years
Leasehold improvements  
Lesser of the lease term or the estimated useful lives of the improvements, ranging from 1 to 14 years
Property and equipment, net, as of March 31, 2025 and 2024 consisted of (in millions):
 As of March 31,
 20252024
Computer, equipment and software$1,033 $965 
Buildings379 376 
Leasehold improvements229 190 
Equipment, furniture and fixtures, and other109 92 
Land66 67 
Construction in progress21 47 
1,837 1,737 
Less: accumulated depreciation(1,251)(1,159)
Property and equipment, net$586 $578