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Schedule I - Condensed Financial Information of Parent (Guarantees and Letters of Credit) (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($) agreement
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 137
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 3,567
Guarantees [Member] | Parent Company |
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 89
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 3,000
Standby Letters of Credit [Member] | Minimum |
Condensed Financial Statements, Captions [Line Items] |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 1.00%
Standby Letters of Credit [Member] | Maximum |
Condensed Financial Statements, Captions [Line Items] |
Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 3.00%
Guarantee Obligations [Member] |
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 89
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 3,040
Guarantee Obligations [Member] | Minimum |
Condensed Financial Statements, Captions [Line Items] |
Loss Contingency, Estimate of Possible Loss | 1
Guarantee Obligations [Member] | Maximum |
Condensed Financial Statements, Captions [Line Items] |
Loss Contingency, Estimate of Possible Loss | $ 350
Unsecured Debt [Member] | Financial Standby Letter of Credit [Member] |
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 28
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 129
Unsecured Debt [Member] | Financial Standby Letter of Credit [Member] | Minimum |
Condensed Financial Statements, Captions [Line Items] |
Loss Contingency, Estimate of Possible Loss | 1
Unsecured Debt [Member] | Financial Standby Letter of Credit [Member] | Maximum |
Condensed Financial Statements, Captions [Line Items] |
Loss Contingency, Estimate of Possible Loss | $ 50
Secured Debt [Member] | Standby Letters of Credit [Member] |
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 9
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 378
Secured Debt [Member] | Financial Standby Letter of Credit [Member] |
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 9
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 18
Secured Debt [Member] | Financial Standby Letter of Credit [Member] | Minimum |
Condensed Financial Statements, Captions [Line Items] |
Loss Contingency, Estimate of Possible Loss | 1
Secured Debt [Member] | Financial Standby Letter of Credit [Member] | Maximum |
Condensed Financial Statements, Captions [Line Items] |
Loss Contingency, Estimate of Possible Loss | $ 4

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- Definition Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 460 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482425/460-10-50-4 + Details
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