Nature of Operations and Significant Accounting Policies (Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss) [Line Items]
Provision (benefit) for income taxes	$ 43.4	$ 37.1	$ 75.9
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	(483.7)
Balance, ending	(466.4)	(483.7)
Cost of sales	1,930.7	2,104.1	2,156.2
Acquisition integration related charges	698.1	698.0	711.9
Other Comprehensive Income (Loss), Net of Tax	16.8	(36.2)	(67.8)
Restatement Adjustment
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning			21.7
Other comprehensive loss before reclassifications			9.6
Amounts reclassified from accumulated other comprehensive loss			15.5
AOCI Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Provision (benefit) for income taxes	122.2	135.4	148.2
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	(483.7)	(447.6)	(380.1)
Other comprehensive loss before reclassifications	3.5	(46.8)	(77.5)
Amounts reclassified from accumulated other comprehensive loss	13.8	10.7	10.0
Balance, ending	(466.4)	(483.7)	(447.6)
Other Comprehensive Income (Loss), Net of Tax	17.3	(36.1)	(67.5)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	(344.3)	(296.6)	(270.4)
Other comprehensive loss before reclassifications	(67.4)	(58.4)	(36.2)
Amounts reclassified from accumulated other comprehensive loss	13.8	10.7	10.0
Balance, ending	(397.9)	(344.3)	(296.6)
Other Comprehensive Income (Loss), Net of Tax	(53.6)	(47.7)	(26.2)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Previously Reported
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	(366.0)	(318.3)	(292.1)
Other comprehensive loss before reclassifications		(73.9)	(45.8)
Amounts reclassified from accumulated other comprehensive loss		26.2	19.6
Balance, ending		(366.0)	(318.3)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	(139.4)	(151.0)	(109.7)
Other comprehensive loss before reclassifications	70.9	11.6	(41.3)
Amounts reclassified from accumulated other comprehensive loss	0.0	0.0	0.0
Balance, ending	(68.5)	(139.4)	(151.0)
Other Comprehensive Income (Loss), Net of Tax	70.9	11.6	(41.3)
Accumulated Translation Adjustment [Member] | Previously Reported
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning	(117.7)	(129.3)	(88.0)
Balance, ending		(117.7)	(129.3)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	17.7	13.6	12.5
Provision (benefit) for income taxes	3.9	2.9	2.5
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Amounts reclassified from accumulated other comprehensive loss	13.8	10.7	10.0
Reclassification out of Accumulated Other Comprehensive Income [Member] | Restatement Adjustment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Provision (benefit) for income taxes		15.5	9.6
Reclassification out of Accumulated Other Comprehensive Income [Member] | Previously Reported
Accumulated Other Comprehensive Income (Loss) [Line Items]
Provision (benefit) for income taxes		(12.6)	(7.1)
Pension Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(0.3)	(0.3)	(0.5)
Defined Benefit Plan, Amortization of Gain (Loss)	19.1	15.3	14.2
Postretirement Benefits [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Defined Benefit Plan, Amortization of Prior Service Cost (Credit)	(1.1)	(1.1)	(1.0)
Defined Benefit Plan, Amortization of Gain (Loss)	$ 0.0	$ (0.3)	$ (0.2)