Restructuring Charges (Details) $ in Millions	12 Months Ended
	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($) ft²	Dec. 31, 2021 USD ($)
Restructuring Cost and Reserve [Line Items]
Severance and termination costs	$ 0.0	$ 0.4	$ (0.1)
Lease Restructuring Cost	(5.7)	(1.2)	85.4
Lease restructuring costs		(1.2)	85.4
Other Restructuring Costs	0.7	0.9	17.1
Restructuring Charges	(5.0)	0.1	102.4
Lease impairment costs 2020 plan	(3.2)	(0.3)	1.0
Other restructuring costs 2020 Plan	0.0	0.1	2.9
Other Restructuring Costs 2022 Real Estate Actions	0.7	0.8	14.2
Restructuring Charges 2020 Plan Reserve	0.4	0.6	2.3	$ 9.4
Restructuring Charges 2020 Plan	(3.2)	0.2	3.8
Restructuring Charges 2022 Real Estate Actions Reserve	0.0	0.0	0.0
Restructuring Charges 2022 Real Estate Actions	(1.8)	(0.1)	$ 98.6
Area of Real Estate Property | ft²			500,000
Operating Lease, Impairment Loss 2022 Real Estate Action	(2.5)	(0.9)	$ 84.4
Area of Real Estate Property, Percent			6.70%
MD&E
Restructuring Cost and Reserve [Line Items]
Severance and termination costs	65.8	55.8	$ 31.6
Lease impairment costs 2020 plan	0.4	(0.3)	0.0
Restructuring Charges 2020 Plan	0.5	(0.3)	0.1
Restructuring Charges 2022 Real Estate Actions	0.3	(1.0)	69.0
Operating Lease, Impairment Loss 2022 Real Estate Action	0.2	(1.0)	54.3
IA&C
Restructuring Cost and Reserve [Line Items]
Severance and termination costs	58.9	53.1	36.6
Lease impairment costs 2020 plan	0.0	0.0	7.0
Restructuring Charges 2020 Plan	(0.2)	0.5	7.7
Restructuring Charges 2022 Real Estate Actions	(2.1)	(0.3)	21.0
Operating Lease, Impairment Loss 2022 Real Estate Action	(2.7)	(0.5)	22.3
SC&E
Restructuring Cost and Reserve [Line Items]
Severance and termination costs	13.8	15.0	10.2
Lease impairment costs 2020 plan	0.3	0.0	(5.9)
Restructuring Charges 2020 Plan	0.3	0.0	(4.2)
Restructuring Charges 2022 Real Estate Actions	0.0	1.1	8.0
Operating Lease, Impairment Loss 2022 Real Estate Action	0.0	0.4	7.0
Corporate Segment and Other Operating Segment
Restructuring Cost and Reserve [Line Items]
Lease impairment costs 2020 plan	(3.9)	0.0	(0.1)
Restructuring Charges 2020 Plan	(3.8)	0.0	0.2
Restructuring Charges 2022 Real Estate Actions	0.0	0.1	0.6
Operating Lease, Impairment Loss 2022 Real Estate Action	0.0	0.2	0.8
Non-cash Items [Member]
Restructuring Cost and Reserve [Line Items]
Severance and termination costs	0.0	0.0	0.0
Lease impairment costs 2020 plan	(3.2)	(0.3)	1.0
Other restructuring costs 2020 Plan	0.0	0.1	2.9
Other Restructuring Costs 2022 Real Estate Actions	0.7	0.2	13.5
Restructuring Charges 2020 Plan	(3.2)	(0.2)	3.9
Restructuring Charges 2022 Real Estate Actions	(1.8)	(0.7)	97.9
Operating Lease, Impairment Loss 2022 Real Estate Action	(2.5)	(0.9)	84.4
Cash Payments [Member]
Restructuring Cost and Reserve [Line Items]
Severance and termination costs	0.2	2.1	7.0
Lease impairment costs 2020 plan	0.0	0.0	0.0
Other restructuring costs 2020 Plan	0.0	0.0	0.0
Other Restructuring Costs 2022 Real Estate Actions	0.0	0.6	0.7
Restructuring Charges 2020 Plan	0.2	2.1	7.0
Restructuring Charges 2022 Real Estate Actions	0.0	0.6	0.7
Operating Lease, Impairment Loss 2022 Real Estate Action	0.0	0.0	0.0
Other Restructuring [Member]
Restructuring Cost and Reserve [Line Items]
Other Restructuring Costs 2022 Real Estate Actions Reserve	0.0	0.0	0.0
Other restructuring costs reserve 2020 plan	0.0	0.0	0.0	0.0
Lease impairment costs [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	0.0	0.0	0.0
Lease impairment costs reserve 2020 Plan	0.0	0.0	0.0	0.0
Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring Reserve	$ 0.4	$ 0.6	$ 2.3	$ 9.4