Goodwill and Other Intangible Assets, net - Other Intangibles and Amortization (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other intangible assets
Accumulated Amortization	$ (705.4)	$ (615.0)
Other intangible assets, net
Other intangible assets, Acquired Cost	2,304.8	1,575.9
Other intangible assets, net	1,599.4	960.9
Trade names
Assets not subject to amortization:
Trade names	195.7	196.6
Customer relationships
Other intangible assets
Acquired Cost	1,441.8	1,000.7
Accumulated Amortization	(449.4)	(393.7)
Net Book Value	992.4	607.0
Technology and intellectual property
Other intangible assets
Acquired Cost	347.8	263.0
Accumulated Amortization	(193.6)	(172.6)
Net Book Value	154.2	90.4
Trade Names and Other
Other intangible assets
Acquired Cost	319.5	115.6
Accumulated Amortization	(62.4)	(48.7)
Net Book Value	$ 257.1	$ 66.9