Restructuring Charges - 2025 Restructuring Actions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Restructuring Cost and Reserve [Line Items]
Severance and termination costs	$ 44.3	$ 0.0	$ 177.7	$ 0.0
Lease impairment costs	14.6	0.4	108.0	1.3
Other related costs	70.6	0.1	165.1	0.1
Restructuring charges	129.5	$ 0.5	450.8	$ 1.4
Liability	74.9		74.9
Non-Cash Items
Restructuring Cost and Reserve [Line Items]
Severance and termination costs			4.7
Lease impairment costs			107.8
Other related costs			67.3
Restructuring charges			179.8
Cash Payments
Restructuring Cost and Reserve [Line Items]
Severance and termination costs			122.0
Lease impairment costs			0.2
Other related costs			73.9
Restructuring charges			196.1
Severance and termination costs
Restructuring Cost and Reserve [Line Items]
Liability	51.0		51.0
Lease impairment costs
Restructuring Cost and Reserve [Line Items]
Liability	0.0		0.0
Other related costs
Restructuring Cost and Reserve [Line Items]
Liability	$ 23.9		$ 23.9