Long-Term Debt - Additional Information (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Long-term debt including current maturities	$ 1,500.0	$ 1,500.0
Debt instrument, unused borrowing capacity, amount	$ 347.5
Uncollateralized senior note due
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	5.04%
5.02% notes, due September 2030
Debt Instrument [Line Items]
Long-term debt including current maturities	$ 50.0	50.0
Debt instrument, interest rate, stated percentage	5.02%
4.88% notes, due August 2028
Debt Instrument [Line Items]
Long-term debt including current maturities	$ 60.0	60.0
Debt instrument, interest rate, stated percentage	4.88%
5.16% notes, due August 2031
Debt Instrument [Line Items]
Long-term debt including current maturities	$ 90.0	$ 90.0
Debt instrument, interest rate, stated percentage	5.16%
Prudential [Member] \| Uncollateralized senior note due
Debt Instrument [Line Items]
Long-term debt including current maturities	$ 200.0
Prudential [Member] \| Uncollateralized senior notes issued August 2025
Debt Instrument [Line Items]
Long-term debt including current maturities	150.0
Prudential [Member] \| 5.02% notes, due September 2030
Debt Instrument [Line Items]
Long-term debt including current maturities	50.0
Prudential [Member] \| 4.88% notes, due August 2028
Debt Instrument [Line Items]
Long-term debt including current maturities	60.0
Prudential [Member] \| 5.16% notes, due August 2031
Debt Instrument [Line Items]
Long-term debt including current maturities	$ 90.0