Intangible Assets - Changes in Carrying Amount (Details) $ in Millions	9 Months Ended
Sep. 30, 2026 USD ($)
Intangible Asset, Finite-Lived [Roll Forward]
Gross, Beginning Balance	$ 5,814.8
Gross, Ending Balance	6,456.3
Accumulated Amortization, Beginning Balance	(2,716.3)
Accumulated Amortization, Ending Balance	(3,027.1)
Net, Beginning Balance	3,098.5
Net, Ending Balance	3,429.2
Business acquisitions
Intangible Asset, Finite-Lived [Roll Forward]
Gross, period increase (decrease)	594.2
Accumulated Amortization, period increase (decrease)	0.0
Net, period increase (decrease)	594.2
Developed internal use software
Intangible Asset, Finite-Lived [Roll Forward]
Gross, period increase (decrease)	151.1
Accumulated Amortization, period increase (decrease)	0.0
Net, period increase (decrease)	151.1
Acquired intangible assets
Intangible Asset, Finite-Lived [Roll Forward]
Gross, period increase (decrease)	1.0
Accumulated Amortization, period increase (decrease)	0.0
Net, period increase (decrease)	1.0
Amortization
Intangible Asset, Finite-Lived [Roll Forward]
Gross, period increase (decrease)	0.0
Accumulated Amortization, period increase (decrease)	(390.9)
Net, period increase (decrease)	(390.9)
Disposals and retirements
Intangible Asset, Finite-Lived [Roll Forward]
Gross, period increase (decrease)	(76.4)
Accumulated Amortization, period increase (decrease)	74.7
Net, period increase (decrease)	(1.7)
Foreign exchange rate adjustment
Intangible Asset, Finite-Lived [Roll Forward]
Gross, period increase (decrease)	(28.4)
Accumulated Amortization, period increase (decrease)	5.4
Net, period increase (decrease)	$ (23.0)

Finite-Lived Intangible Assets, Accumulated Amortization, Increase (Decrease)

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Finite-Lived Intangible Assets, Increase (Decrease), Net

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Amount of accumulated amortization of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Amount, before accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
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Amount, after accumulated amortization, of finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
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Amount of increase (decrease) in finite-lived intangible asset. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

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