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Income Taxes (Schedule of Deductible Loss and Credit Carryforwards) (Detail) $ in Millions | 12 Months Ended
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Dec. 31, 2024 USD ($)
Deductible loss and credit carryforwards [Line Items] |
Deductible amount | $ 2,636
Losses, Deferred tax asset | 710
Losses, Valuation allowance | (113)
Federal |
Deductible loss and credit carryforwards [Line Items] |
Deductible amount | 391
Losses, Deferred tax asset | $ 82
Losses, Expiration Period | 2037
Federal | Federal Production and Other Credits |
Deductible loss and credit carryforwards [Line Items] |
Tax credits, Deferred tax asset | $ 22
Federal | Federal Production and Other Credits | Earliest Tax Year |
Deductible loss and credit carryforwards [Line Items] |
Tax Credits, Expiration Period | 2036
Federal | Federal Production and Other Credits | Latest Tax Year |
Deductible loss and credit carryforwards [Line Items] |
Tax Credits, Expiration Period | 2038
State |
Deductible loss and credit carryforwards [Line Items] |
Deductible amount | $ 2,245
Losses, Deferred tax asset | 115
Losses, Valuation allowance | (50)
State minimum tax credits | $ 378
State | Earliest Tax Year |
Deductible loss and credit carryforwards [Line Items] |
Losses, Expiration Period | 2025
State | Latest Tax Year |
Deductible loss and credit carryforwards [Line Items] |
Losses, Expiration Period | 2043
State | Investment and Other Credits |
Deductible loss and credit carryforwards [Line Items] |
Losses, Valuation allowance | $ (63)
Tax credits, Deferred tax asset | $ 113
State | Investment and Other Credits | Earliest Tax Year |
Deductible loss and credit carryforwards [Line Items] |
Tax Credits, Expiration Period | 2025
State | Investment and Other Credits | Latest Tax Year |
Deductible loss and credit carryforwards [Line Items] |
Tax Credits, Expiration Period | 2033

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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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- Definition Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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- Definition Amount before allocation of valuation allowances of deferred tax asset attributable to deductible alternative minimum tax credit carryforwards. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-6 + Details
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- Definition Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 740 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482685/740-10-50-3 + Details
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