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Debt (Narrative) (Details) - Subordinated Debentures due 2055 $ in Millions	3 Months Ended
	Mar. 31, 2025 USD ($)
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.65%
Debt Instrument, Face Amount	$ 700
Debt Related Commitment Fees and Debt Issuance Costs	$ 9

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- Definition

Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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