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v3.23.3

Variable Interest Entities (Detail) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Variable Interest Entity |  |
Carrying value of debt | $ 15,430 | $ 14,984
Assets | 31,935 | 31,367
Variable Interest Entity, Primary Beneficiary [Member] |  |
Variable Interest Entity |  |
Assets | 116 | 113
Low income housing investments [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] |  |
Variable Interest Entity |  |
Aggregate investment balance | 278 | 321
Carrying value of debt | 243 | 295
Trust For Final Capping, Closure, Post-closure Or Environmental Remediation Obligations [Member] | Variable Interest Entity, Not Primary Beneficiary [Member] |  |
Variable Interest Entity |  |
Aggregate investment balance | $ 94 | $ 93

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