Business Combinations - Additional Information (Detail) $ in Millions		6 Months Ended	12 Months Ended
	Oct. 01, 2019	Jun. 30, 2023 USD ($) Country	Dec. 31, 2022 USD ($)
Accrued consideration issued in business combinations		$ 4
2023 Acquisitions [Member]
Cash paid at closing		30
Liability for deferred payments		5
Accrued consideration issued in business combinations		3
APi Acquisition [Member]
Contingent compensation		5	$ 19
Maximum payout of contingent compensation		14	25
Payout of accrued contingent compensation		5	19
Liability for deferred payments		$ 13	9
APi Acquisition [Member] | Minimum [Member]
Liability for deferred payments recognition period	1 year
APi Acquisition [Member] | Maximum [Member]
Contingent compensation arrangements recognized period	4 years
Liability for deferred payments recognition period	3 years
Chubb Limited Fire and Security Business [Member]
Cash paid at closing			$ 2,935
Number of countries of significant business operations | Country		17
Number of countries expanding operations | Country		20