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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, 2022 USD ($) agreement
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 140
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2,693
Guarantees [Member] | Parent Company |
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 81
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2,400
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 | 81
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 2,406
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 | $ 400
Unsecured Debt [Member] | Financial Standby Letter of Credit [Member] |
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 39
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 128
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 | $ 36
Secured Debt [Member] | Standby Letters of Credit [Member] |
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 2
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 123
Secured Debt [Member] | Financial Standby Letter of Credit [Member] |
Condensed Financial Statements, Captions [Line Items] |
Obligations number of agreements | agreement | 16
Guarantor Obligations, Maximum Exposure, Undiscounted | $ 34
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 | $ 15

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI https://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248 + Details
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