Commitments and Contingencies (Schedule of Long-Term Purchase Agreements) (Parenthetical) (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Long Term Purchase Commitment [Line Items]
Energy payments under power purchase contracts	$ 70	$ 75	$ 73
Solar Affiliates [Member]
Long Term Purchase Commitment [Line Items]
Affiliated amount for long term commitments	$ 185

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

No definition available.

Name:	us-gaap_OtherCommitment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant