Debt - Junior Subordinated Notes Issuance (Details) - Junior Subordinated Debt $ in Billions	Sep. 18, 2025 USD ($) yr deferral
Series A & Series B Junior Subordinated Notes due 2056
Debt Instrument [Line Items]
Debt issued and guaranteed	$ 2
Series A Junior Subordinated Notes due 2056
Debt Instrument [Line Items]
Debt issued and guaranteed	$ 1
Debt interest rate (as a percent)	5.875%
Debt interest rate reset, period	5 years
Debt instrument, basis spread on variable rate	2.283%
Debt number of interest payment deferrals \| deferral	1
Debt interest payment deferral, consecutive years per deferral period \| yr	10
Series B Junior Subordinated Notes due 2056
Debt Instrument [Line Items]
Debt issued and guaranteed	$ 1
Debt interest rate (as a percent)	6.20%
Debt interest rate reset, period	5 years
Debt instrument, basis spread on variable rate	2.166%
Debt number of interest payment deferrals \| deferral	1
Debt interest payment deferral, consecutive years per deferral period \| yr	10

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Debt Instrument, Interest Rate Reset, Period

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- Definition

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- Definition

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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