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Short-Term and Long-Term Borrowings - Narrative (Details) - USD ($)		6 Months Ended
	Mar. 27, 2025	Jun. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Debt, weighted average interest rate (as a percent)			5.61%
Long-term debt		$ 1,047,000,000	$ 947,000,000
Debt instrument, redemption price, percentage of principal amount redeemed (as a percent)	10.00%
Debt instrument, redemption price, percentage (as a percent)	100.00%
Series 2025A Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt		$ 50,000,000	0
Interest rate (as a percent)	5.49%	5.49%
Series 2025B Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt		$ 50,000,000	$ 0
Interest rate (as a percent)		5.98%
Senior Notes
Debt Instrument [Line Items]
Long-term debt	$ 100,000,000
Senior Notes | Series 2025A Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt	50,000,000
Senior Notes | Series 2025B Senior Unsecured Notes
Debt Instrument [Line Items]
Long-term debt	$ 50,000,000
Interest rate (as a percent)	5.98%
Minimum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)		0.00%
Debt to total capitalization ratio		0.60
Interest and dividend coverage ratio		1.50
Maximum
Debt Instrument [Line Items]
Debt instrument, basis spread on variable rate (as a percent)		2.00%
Debt to total capitalization ratio		0.65

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