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Subsequent Events (Details) - Subsequent Event - USD ($) $ / shares in Units, $ in Millions	Nov. 07, 2024	Oct. 30, 2024	Oct. 31, 2024	Oct. 29, 2024
Subsequent Event [Line Items]
Special cash dividend declared	$ 1,900
Special cash dividend (in dollars per share)	$ 5.00
LLOYDS BANK CORPORATE MARKETS | Amended L/C agreement
Subsequent Event [Line Items]
Maximum borrowing capacity		$ 700		$ 530
Increase in maximum borrowing capacity		$ 170
Letters of credit outstanding, amount			$ 700
Loss from Catastrophes | Hurricane Milton | Minimum
Subsequent Event [Line Items]
Estimate of loss, net of reinsurance and reinstatement premiums			275
Estimate of loss, industry			25,000
Loss from Catastrophes | Hurricane Milton | Maximum
Subsequent Event [Line Items]
Estimate of loss, net of reinsurance and reinstatement premiums			375
Estimate of loss, industry			$ 35,000

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