Business Combinations - Summary of Preliminary Fair Value of Consideration of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Jun. 30, 2022	Dec. 31, 2021	Jan. 03, 2022
Premier Fire [Member]
Business Acquisition [Line Items]
Aggregate cash consideration		$ 32
Estimated net working capital adjustment		(7)
Total consideration		39
Cash		3
Current assets		10
Property and equipment		1
Intangible assets other then goodwill		14
Goodwill		17
Current liabilities		(6)
Net assets acquired		39
Northern Air Corporation [Member]
Business Acquisition [Line Items]
Aggregate cash consideration		36
Estimated net working capital adjustment		(4)
Total consideration		40
Cash		2
Current assets		22
Property and equipment		2
Intangible assets other then goodwill		13
Goodwill		13
Current liabilities		(12)
Net assets acquired		40
Other 2021 Acquisitions [Member]
Business Acquisition [Line Items]
Aggregate cash consideration		25
Estimated net working capital adjustment		(9)
Total consideration		34
Cash		2
Current assets		6
Property and equipment		2
Intangible assets other then goodwill		11
Goodwill		19
Current liabilities		(6)
Net assets acquired		$ 34
Chubb Limited (“Chubb”) Fire and Security Business [Member]
Business Acquisition [Line Items]
Aggregate cash consideration	$ 2,935
Cash			$ 60
Accounts receivable			438
Inventories			67
Contract assets			183
Other current assets			20
Property and equipment			67
Operating lease right of use assets			154
Pension and post-retirement assets			626
Other noncurrent assets			20
Intangible assets other then goodwill			1,385
Goodwill			1,229
Accounts payable			(191)
Contract liabilities			(162)
Accrued expenses			(219)
Finance and operating lease liabilities			(154)
Pension and post-retirement obligations			(75)
Deferred tax liabilities			(465)
Other noncurrent liabilities			(84)
Net assets acquired			$ 2,899