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Subordinated Debt Securities (Details) - USD ($) $ in Millions | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2025 | Jun. 30, 2025 | Mar. 13, 2025 | Dec. 31, 2024
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debt securities |  | $ 4,153 |  | $ 3,164
Subordinated Debt |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Subordinated debt securities |  |  | $ 1,000 |
Payments of Debt Issuance Costs | $ 12 |  |  |
Subordinated Borrowing, Interest Rate | 6.35% |  |  |
Junior Subordinated Debt Instrument One |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 10.75% |
Junior Subordinated Debt Instrument Two |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 9.25% |
Junior Subordinated Debt Instrument Three |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 7.875% |
Junior Subordinated Debt Instrument Four |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 6.40% |
Senior Notes |  |  |  |
Subordinated Borrowing [Line Items] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 5.70% |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B + Details
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- Definition The cash outflow paid to third parties in connection with debt origination, which will be amortized over the remaining maturity period of the associated long-term debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of subordinated debt (with initial maturities beyond one year or beyond the operating cycle if longer). Subordinated debt places a lender in a lien position behind debt having a higher priority of repayment in liquidation of the entity's assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -SubTopic 10 -Topic 210 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(19)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 942 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478546/942-210-S99-1 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)(a)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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