Restructuring Charges (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) personnel	Sep. 30, 2019 USD ($)
Restructuring Cost and Reserve [Line Items]
Restructuring and Related Cost, Number of Positions Eliminated \| personnel			971
Severance and termination costs	$ 17.9	$ 0.0	$ 62.5	$ 22.0
Lease impairment costs	26.6	0.0	92.3	11.9
Other restructuring costs	2.8	0.0	5.1	0.0
Restructuring charges	$ 47.3	$ 0.0	$ 159.9	$ 33.9

Amount of loss from impairment of right-of-use asset from operating lease.

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