Acquisitions and Divestitures - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 09, 2024	Dec. 31, 2023
Assets:
Goodwill	$ 1,465.5		$ 1,369.6
Liabilities:
Adjustment, noncontrolling interest acquired	1.1
CGI Inc
Assets:
Accounts receivable		$ 4.2
Inventories		13.4
Other current assets		0.2
Property, plant and equipment		10.0
Operating lease assets		1.8
Goodwill		79.8
Other intangible assets		88.4
Other non-current assets		3.0
Total assets acquired		200.8
Liabilities:
Accounts payable, trade		0.6
Salaries, wages and benefits		1.4
Other current liabilities		2.8
Deferred income taxes		23.4
Other non-current liabilities		5.2
Total liabilities assumed		33.4
Net assets acquired		$ 167.4
2023 Acquisitions
Assets:
Accounts receivable	43.9		44.7
Adjustments, accounts receivable	(0.8)
Inventories	113.5		111.8
Adjustments, inventories	1.7
Other current assets	5.0		5.0
Property, plant and equipment	47.9		47.7
Adjustments, property plant and equipment	0.2
Operating lease assets	7.2		7.3
Adjustments, operating lease assets	(0.1)
Goodwill	291.9		285.6
Adjustments, goodwill	6.3
Other intangible assets	299.5		306.7
Adjustments, other intangible assets	(7.2)
Other non-current assets	5.1		6.7
Adjustment, other non-current assets	(1.6)
Total assets acquired	814.0		815.5
Adjustments, total assets acquired	(1.5)
Liabilities:
Accounts payable, trade	24.2		24.0
Adjustments, accounts payable, trade	0.2
Salaries, wages and benefits	14.9		16.9
Adjustments, salaries, wages and benefits	(2.0)
Income taxes payable	5.5		5.5
Other current liabilities	10.0		10.7
Adjustments, other current liabilities	(0.7)
Short-term debt	5.1		4.7
Adjustment, short-term debt	0.4
Long-term debt	6.0		6.0
Accrued pension benefits	3.6		3.6
Long-term operating lease liabilities	7.0		7.0
Deferred income taxes	82.4		83.3
Adjustment, deferred income taxes	(0.9)
Other non-current liabilities	7.6		7.6
Total liabilities assumed	166.3		169.3
Adjustments, total liabilities assumed	(3.0)
Noncontrolling interest acquired	6.3		5.2
Net assets acquired	641.4		$ 641.0
Adjustments, net assets acquired	$ 0.4