Financing Receivables (Narrative) (Detail) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Energy Holdings [Member]
Schedule of Financial Receivables [Line Items]
Leveraged Leases, Net Investment in Leveraged Leases Disclosure, Investment in Leveraged Leases, Net	$ 123	$ 136

The net investment in arrangements meeting the criteria for classification as leveraged leases including deferred taxes.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 842
-SubTopic 50
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479711/842-50-50-1

Reference 2: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 840
-SubTopic 30
-Name Accounting Standards Codification
-Section 30
-Paragraph 14
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481274/840-30-30-14

Name:	us-gaap_LeveragedLeasesNetInvestmentInLeveragedLeasesDisclosureInvestmentInLeveragedLeasesNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant