Debt - Schedule of Debt (Parenthetical) (Detail)	9 Months Ended
Sep. 30, 2026
Debt Instrument [Line Items]
Total long-term debt average term	11 years 7 months 6 days
Total long-term debt average rate	5.10%
Commercial Paper [Member]
Debt Instrument [Line Items]
Short term debt average term	26 days
Weighted average rate	4.20%
Other Debt [Member]
Debt Instrument [Line Items]
Effective interest rate	5.00%
Senior Unsecured Notes Payable Through 2095 [Member]
Debt Instrument [Line Items]
Effective interest rate	5.10%
Payable year	2095

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
-SubTopic 210
-Name Accounting Standards Codification
-Section S45
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477657/942-210-S45-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478478/942-210-S50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 942
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-Paragraph 1
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-Publisher FASB
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Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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-Publisher FASB
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Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 210
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-Name Accounting Standards Codification
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480657/210-10-S50-9

Reference 6: http://www.xbrl.org/2003/role/exampleRef
-Topic 835
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-URI https://asc.fasb.org/1943274/2147482949/835-30-55-8

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
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-URI https://asc.fasb.org/1943274/2147482900/835-30-50-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-6

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant