Debt and Credit Facilities - Additional Information (Details) - USD ($)	Mar. 31, 2023	Mar. 31, 2022
Revolving Securitization Facility [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	$ 8,000,000,000.0
Credit facilities amount outstanding	5,500,000,000	$ 3,200,000,000
Total Committed Bank Credit Facilities [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	4,600,000,000
Credit facilities amount outstanding	0	0
Committed Bank Credit Facility Expiring 2024 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	2,300,000,000
Committed Bank Credit Facility Expiring 2025 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	180,000,000
Committed Bank Credit Facility Expiring 2026 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	2,100,000,000
Three Year Revolving Credit Facility Expiring 2026 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	5,000,000,000.0
Credit facilities amount outstanding	0	0
Three Hundred Sixty Four Day Syndicated Bank Credit Facility Expiring 2024 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	5,000,000,000.0
Credit facilities amount outstanding	0	0
Three year syndicated bank credit facility expiring 2026 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	5,000,000,000.0
Credit facilities amount outstanding	0	0
Five Year Syndicated Bank Credit Facility Expiring 2028 [Member]
Line Of Credit Facility [Line Items]
Maximum borrowing capacity	5,000,000,000.0
Credit facilities amount outstanding	$ 0	$ 0