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Debt Obligations - Senior Notes (Details) - Senior Notes $ in Thousands	Sep. 30, 2023 USD ($)
Senior Notes Due October 2024
Debt Instrument [Line Items]
Interest rate (in percent)	0.95%
Semi-annual interest payable	$ 2,375
Senior Notes Due October 2030
Debt Instrument [Line Items]
Interest rate (in percent)	2.90%
Semi-annual interest payable	$ 14,500
Senior Notes Due January 2032
Debt Instrument [Line Items]
Interest rate (in percent)	2.35%
Semi-annual interest payable	$ 5,875
Senior Notes Due October 2041
Debt Instrument [Line Items]
Interest rate (in percent)	3.05%
Semi-annual interest payable	$ 7,625

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