Stock Plans (Details Textual) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	5,600,000		1,350,000
Allocated Share-based Compensation Expense	$ 36.5		$ 22.0	$ 21.4
Employee Service Share-based Compensation, Tax Benefit from Compensation Expense	4.1		2.1	4.9
Proceeds from Stock Options Exercised	7.8		15.8	13.1
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Total Intrinsic Value	$ 27.7		$ 41.1	30.6
employee service share-based compensation, nonvested awards, total compensation cost not yet recognized, total period for recognition	2 years 7 months 6 days
Options granted	5,600,000		1,350,000
Fair value of option	$ 40.3		$ 26.9
Expected lives	4 years 6 months		5 years
Risk-free interest rate	1.19%		0.33%
Volatility	40.00%		37.00%
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period	3 years
Risk-free interest rate	0.50%		0.31%
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options vesting period	5 years
Risk-free interest rate	1.21%		1.17%
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 17.3
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Total Fair Value	$ 13.8		$ 15.4	$ 16.6
Weighted Average Grant Date Fair Value Per Share, Granted	$ 117.35
Weighted Average Exercise Price, Granted	$ 115.85		$ 117.97	$ 145.93
Performance-based Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 16.8
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	2 years
Time-based restricted stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	3 years
Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	331,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 58.5
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Period for Recognition	4 years
Weighted Average Grant Date Fair Value Per Share, Granted				$ 1.7
Options granted	331,000
Expected lives	4 years 7 months 6 days	[1]	7 years 1 month 6 days	5 years 2 months 12 days
Volatility	39.30%		35.60%	29.30%
Number of Shares, Granted	532,979
Weighted Average Exercise Price, Granted	$ 116.55

[1] During 2020, the Company granted 1,350,000 options that were valued using a Monte Carlo simulation due to market performance conditions included in the option grant. The Monte Carlo simulation calculated a fair value per option of $26.90 using the following assumptions: volatility of 37.0%, risk-free interest rate of 0.33%, and a term of 5.0 years.