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Derivative Instruments - Schedule of the Fair Value and Notional Value of the Derivative Assets and Liabilities (Details) € in Thousands, £ in Thousands, $ in Thousands, $ in Thousands	Sep. 30, 2026 USD ($)	Sep. 30, 2026 AUD ($)	Sep. 30, 2026 CAD ($)	Sep. 30, 2026 EUR (€)	Sep. 30, 2026 GBP (£)	May 21, 2026 USD ($)	Jan. 15, 2026 USD ($)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 AUD ($)	Dec. 31, 2025 CAD ($)	Dec. 31, 2025 EUR (€)	Dec. 31, 2025 GBP (£)	May 15, 2025 USD ($)	Apr. 26, 2021 USD ($)
Derivative [Line Items]
Notional Amount						$ 400,000,000.0
Assets	$ 780,799,000							$ 401,306,000
Liabilities	(773,266,000)							(402,099,000)
Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	2,710,000,000							1,980,000,000
Assets	0							16,493,000
Liabilities	(66,053,000)							(13,370,000)
Cumulative increase (decrease) hedging adjustments, included in carrying amount	(64,600,000)							(3,000,000.0)
Interest rate swap 2027 Notes
Derivative [Line Items]
Notional Amount														$ 500,000,000.0
Interest rate swap 2027 Notes \| Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount							$ 13,100,000
Interest rate swap 2030 Notes
Derivative [Line Items]
Notional Amount													$ 500,000,000.0
Interest rate swap 2029 Notes \| Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount							$ 500,000,000
Deutsche Bank AG \| Designated as Hedging Instrument
Derivative [Line Items]
Assets	0							5,663,000
Liabilities	(19,601,000)							(13,370,000)
Deutsche Bank AG \| Interest rate swap 2027 Notes \| Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	500,000,000							500,000,000
Assets	0							0
Liabilities	(914,000)							(13,370,000)
Deutsche Bank AG \| Interest rate swap 2030 Notes \| Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	500,000,000							500,000,000
Assets	0							5,663,000
Liabilities	(18,687,000)							0
Goldman Sachs Bank USA \| Designated as Hedging Instrument
Derivative [Line Items]
Assets	0							10,830,000
Liabilities	(24,036,000)							0
Goldman Sachs Bank USA \| Interest rate swap 2029 Notes \| Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	600,000,000							600,000,000
Assets	0							3,645,000
Liabilities	(16,909,000)							0
Goldman Sachs Bank USA \| Interest rate swap 2029 Notes \| Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	400,000,000							400,000,000
Assets	0							7,185,000
Liabilities	(7,127,000)							0
Goldman Sachs Bank USA \| Foreign currency forward contract AUD
Derivative [Line Items]
Notional Amount		$ 2,080							$ 2,580
Assets	1,452,000							1,685,000
Liabilities	(1,445,000)							(1,722,000)
Goldman Sachs Bank USA \| Foreign currency forward contract EUR
Derivative [Line Items]
Notional Amount \| €				€ 0							€ 208,670
Assets	0							247,528,000
Liabilities	0							(247,272,000)
Goldman Sachs Bank USA \| Foreign currency forward contract GBP
Derivative [Line Items]
Notional Amount \| £					£ 0							£ 94,190
Assets	0							126,248,000
Liabilities	0							(126,916,000)
Royal Bank of Canada \| Designated as Hedging Instrument
Derivative [Line Items]
Assets	0							0
Liabilities	(8,685,000)							0
Royal Bank of Canada \| Interest rate swap September 2028 Notes \| Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	400,000,000							0
Assets	0							0
Liabilities	(8,685,000)							0
Royal Bank of Canada \| Foreign currency forward contract EUR
Derivative [Line Items]
Notional Amount \| €				17,348							0
Assets	20,385,000							0
Liabilities	(19,811,000)							0
Royal Bank of Canada \| Foreign currency forward contract GBP
Derivative [Line Items]
Notional Amount	113,761,000							0
Assets	112,957,000							0
Liabilities	(113,761,000)							0
Royal Bank of Canada \| Foreign currency forward contract CAD
Derivative [Line Items]
Notional Amount			$ 141,265							$ 0
Assets	102,827,000							0
Liabilities	(99,563,000)							0
Royal Bank of Canada \| Foreign currency forward contract GBP
Derivative [Line Items]
Notional Amount \| £					170,288							0
Assets	228,009,000							0
Liabilities	(225,987,000)							0
SMBC Capital Markets, Inc. \| Designated as Hedging Instrument
Derivative [Line Items]
Assets	0							0
Liabilities	(13,731,000)							0
SMBC Capital Markets, Inc. \| Interest rate swap 2031 Notes \| Designated as Hedging Instrument
Derivative [Line Items]
Notional Amount	400,000,000							0
Assets	0							0
Liabilities	(13,731,000)							0
SMBC Capital Markets, Inc. \| Foreign currency forward contract EUR
Derivative [Line Items]
Notional Amount \| €				27,630							5,301
Assets	31,882,000							6,296,000
Liabilities	(31,540,000)							(6,281,000)
SMBC Capital Markets, Inc. \| Foreign currency forward contract GBP
Derivative [Line Items]
Notional Amount \| £					£ 29,631							£ 14,775
Assets	39,624,000							19,549,000
Liabilities	(39,322,000)							(19,908,000)
SMBC Capital Markets, Inc. \| Foreign currency forward contract GBP
Derivative [Line Items]
Notional Amount	19,739,000							0
Assets	19,601,000							0
Liabilities	(19,739,000)							0
US Bank National Association \| Foreign currency forward contract EUR
Derivative [Line Items]
Notional Amount \| €				€ 194,570							€ 0
Assets	224,061,000							0
Liabilities	$ (222,097,000)							$ 0