Acquisitions (Details) - USD ($)				1 Months Ended	3 Months Ended		5 Months Ended	6 Months Ended
	Jun. 30, 2022	Feb. 01, 2022	Sep. 01, 2021	Sep. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Acquisitions
Revenues					$ 1,846,900,000	$ 1,177,800,000		$ 3,343,200,000	$ 2,118,700,000
Operating income					410,600,000	$ 133,800,000		687,900,000	$ 218,500,000
Goodwill	$ 2,201,600,000				$ 2,201,600,000		$ 2,201,600,000	$ 2,201,600,000		$ 2,199,000,000
0.55% Notes due 2023
Acquisitions
Interest rate (as a percent)	0.55%				0.55%		0.55%	0.55%		0.55%
2.20% Notes due 2032
Acquisitions
Interest rate (as a percent)	2.20%			2.20%	2.20%		2.20%	2.20%
MB Technology
Acquisitions
Percentage of ownership interest acquired		100.00%
Total consideration		$ 26,300,000
Cash acquired	$ 1,600,000				$ 1,600,000		$ 1,600,000	$ 1,600,000
Revenues					4,100,000		6,100,000
Operating income							100,000
Goodwill		12,500,000
Goodwill deductible for tax purposes		0
Finite-lived intangible assets acquired		3,400,000
Inventory		2,800,000
Accounts receivable		800,000
Accounts payable		500,000
MB Technology | Customer relationships
Acquisitions
Total consideration		$ 7,900,000
Useful life of finite lived intangible assets		9 years
ASP Henry Holdings, Inc.
Acquisitions
Cash acquired	34,300,000		$ 34,300,000		34,300,000		34,300,000	34,300,000
Goodwill	561,500,000		903,000,000.0		561,500,000		561,500,000	561,500,000
Goodwill deductible for tax purposes			50,900,000
Inventory	51,500,000		59,400,000		51,500,000		51,500,000	51,500,000
Accounts receivable	79,000,000.0		79,000,000.0		79,000,000.0		79,000,000.0	79,000,000.0
Accounts payable	75,700,000		77,900,000		75,700,000		75,700,000	75,700,000
Consideration paid	1,605,600,000		1,608,200,000
Gross contractual accounts receivable acquired			81,900,000
Accounts receivable not expected to be collected			2,900,000
Deferred income taxes	$ (261,200,000)		$ (153,400,000)		$ (261,200,000)		$ (261,200,000)	$ (261,200,000)
ASP Henry Holdings, Inc. | Customer relationships
Acquisitions
Useful life of finite lived intangible assets			18 years
ASP Henry Holdings, Inc. | 0.55% Notes due 2023
Acquisitions
Proceeds from notes				$ 300,000,000
Repayments of revolving credit facility				300,000,000
ASP Henry Holdings, Inc. | 2.20% Notes due 2032
Acquisitions
Proceeds from notes				550,000,000
Repayments of revolving credit facility				$ 550,000,000