Goodwill and Other Assets Schedule of Intangible Assets (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 925.6		$ 1,034.0
Accumulated amortization	(671.4)		(686.5)
Intangible assets, net	254.2		347.5
Payments to Develop Software	24.0	$ 21.6
Amortization of internally-developed software	$ (19.7)	(17.7)
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	3 years 4 months 24 days
Gross carrying amount	$ 605.3		703.3
Accumulated amortization	(394.0)		(401.6)
Intangible assets, net	$ 211.3		301.7
Internally-developed software [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	1 year 10 months 24 days
Gross carrying amount	$ 227.9		228.1
Accumulated amortization	(189.4)		(184.9)
Intangible assets, net	38.5	41.5	43.2	$ 38.0
Transfer To Held For Sale	$ (9.0)	$ (0.4)
Development costs non-software [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	9 months 18 days
Gross carrying amount	$ 46.3		51.8
Accumulated amortization	(44.0)		(51.6)
Intangible assets, net	$ 2.3		0.2
Other intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	5 years 2 months 12 days
Gross carrying amount	$ 46.1		50.8
Accumulated amortization	(44.0)		(48.4)
Intangible assets, net	2.1		2.4
Other intangible asset, net [Member]
Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	320.3		330.7
Accumulated amortization	(277.4)		(284.9)
Intangible assets, net	42.9		$ 45.8
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets, net	$ 211.3