Notes Payable - Earliest Interest Reset Date of Borrowing Outstanding (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Debt Instrument [Line Items]
2022	$ 5,994,023
2023	4,877,070
2024	3,257,121
2025	2,442,236
2026	2,725,448
Thereafter	4,542,261
Total principal net of discounts	$ 23,838,159
Short-term debt, weighted average rate (as a percent)	1.19%	0.45%
Weighted - average rate (as a percent)	1.45%
Total weighted - average rate (as a percent)	1.37%
Due within one year
Debt Instrument [Line Items]
Short-term debt, weighted average rate (as a percent)	1.32%
Year one
Debt Instrument [Line Items]
Weighted - average rate (as a percent)	1.17%
Year two
Debt Instrument [Line Items]
Weighted - average rate (as a percent)	1.10%
Year three
Debt Instrument [Line Items]
Weighted - average rate (as a percent)	1.16%
Year four
Debt Instrument [Line Items]
Weighted - average rate (as a percent)	1.16%
Thereafter
Debt Instrument [Line Items]
Weighted - average rate (as a percent)	2.11%