Goodwill and Other Intangible Assets (Intangible Assets Purchased) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 986.3	$ 340.4
Accumulated amortization	222.3	161.7
Net intangibles as of end of period	764.0	178.7
Acquired during period:
Acquired related to business acquisitions	648.0	24.9
Acquired outside business acquisitions	7.5	11.1
Total acquired in period	$ 655.5	$ 36.0
Weighted average amortization period in years for items acquired in period	14 years 6 months	11 years 7 months 6 days
Patents and Trademarks
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 133.9	$ 65.8
Accumulated amortization	36.7	31.3
Net intangibles as of end of period	97.2	34.5
Acquired during period:
Acquired related to business acquisitions	67.1	2.7
Acquired outside business acquisitions	1.6	1.3
Total acquired in period	$ 68.7	$ 4.0
Weighted average amortization period in years for items acquired in period	15 years 1 month 6 days	16 years 6 months
Technology
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 178.1	$ 4.7
Accumulated amortization	12.9	0.9
Net intangibles as of end of period	165.2	3.8
Acquired during period:
Acquired related to business acquisitions	173.3	0.9
Acquired outside business acquisitions	0.0	0.0
Total acquired in period	$ 173.3	$ 0.9
Weighted average amortization period in years for items acquired in period	15 years	5 years
Non-compete Agreements
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 42.1	$ 15.8
Accumulated amortization	14.2	8.6
Net intangibles as of end of period	27.9	7.2
Acquired during period:
Acquired related to business acquisitions	28.7	1.9
Acquired outside business acquisitions	0.0	0.6
Total acquired in period	$ 28.7	$ 2.5
Weighted average amortization period in years for items acquired in period	5 years 2 months 12 days	4 years 6 months
Customer- Related Intangibles
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 591.1	$ 212.5
Accumulated amortization	136.3	98.8
Net intangibles as of end of period	454.8	113.7
Acquired during period:
Acquired related to business acquisitions	378.9	19.4
Acquired outside business acquisitions	0.0	0.0
Total acquired in period	$ 378.9	$ 19.4
Weighted average amortization period in years for items acquired in period	15 years	14 years 4 months 24 days
Supply Agreements and Other
Acquired Finite-Lived Intangible Assets [Line Items]
Gross carrying amount	$ 41.1	$ 41.6
Accumulated amortization	22.2	22.1
Net intangibles as of end of period	18.9	19.5
Acquired during period:
Acquired related to business acquisitions	0.0	0.0
Acquired outside business acquisitions	5.9	9.2
Total acquired in period	$ 5.9	$ 9.2
Weighted average amortization period in years for items acquired in period	7 years 7 months 6 days	8 years 3 months 18 days