[Line Items] for Income Taxes Summary [Table]

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards.

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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

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-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-8

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are not subject to expiration dates.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible operating loss carryforwards that are subject to expiration dates.

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Income Taxes - Federal NOLs and Excess Business Interest (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Income Taxes Summary [Line Items]
Total federal net operating losses	$ 848	$ 870
Attributes subject to Section 382 base annual limitation, 54 million \| Excess business interest expense (indefinitely lived)
Income Taxes Summary [Line Items]
Excess business interest expense (indefinitely lived)	1,381
Attributes subject to Section 382 base annual limitation, 54 million \| Federal
Income Taxes Summary [Line Items]
Indefinitely lived	2,268
Total federal net operating losses	3,028
Attributes subject to Section 382 base annual limitation, 54 million \| 2037 \| Federal
Income Taxes Summary [Line Items]
Net operating losses, by year of expiration:	760
Attributes subject to Section 382 base annual limitation, 2 million \| Excess business interest expense (indefinitely lived)
Income Taxes Summary [Line Items]
Excess business interest expense (indefinitely lived)	75
Attributes subject to Section 382 base annual limitation, 2 million \| Federal
Income Taxes Summary [Line Items]
Indefinitely lived	102
Total federal net operating losses	126
Attributes subject to Section 382 base annual limitation, 2 million \| 2037 \| Federal
Income Taxes Summary [Line Items]
Net operating losses, by year of expiration:	24
Attributes not subject to Section 382 limitation \| Excess business interest expense (indefinitely lived)
Income Taxes Summary [Line Items]
Excess business interest expense (indefinitely lived)	1,277
Attributes not subject to Section 382 limitation \| Federal
Income Taxes Summary [Line Items]
Indefinitely lived	0
Total federal net operating losses	0
Attributes not subject to Section 382 limitation \| 2037 \| Federal
Income Taxes Summary [Line Items]
Net operating losses, by year of expiration:	$ 0