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Accounting for Stock Compensation - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended
	Apr. 04, 2018	Mar. 31, 2020	Mar. 31, 2019
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Allocated share-based compensation expense		$ 5.1	$ 6.7
Restricted Stock Units (RSUs)
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period		164,468
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value		$ 57.76
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized		$ 20.6
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition		2 years 4 months 28 days
Cash Settled RSUs
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period		110,895
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value		$ 57.76
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized		$ 11.7
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition		2 years 1 month 6 days
Performance Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period		55,264
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period, weighted average grant date fair value		$ 58.76
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized		$ 6.5
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition		1 year 9 months 18 days
Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, number of shares grants	1,185,000	109,832
Share-based compensation arrangement by share-based payment award, number of additional awards		0
Share-based compensation arrangement by share-based payment award, number of shares available for grant		669,643