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Capital Stock and Equity Compensation (Additional Information) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding	$ 0
Total intrinsic value of options exercised in period	1,600,000	$ 2,400,000	$ 6,000,000.0
Cash received from exercise of options exercised	$ 300,000	900,000	3,100,000
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Future compensation cost, period of recognition	3 years
Compensation expense	$ 5,000,000.0	4,400,000	4,700,000
Nonvested awards, total compensation cost not yet recognized	$ 7,500,000
Weighted-average remaining contractual life in years, options outstanding	10 months 24 days
Performance Shares \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividend yield (percentage)	0.00%
Performance Shares \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock award program, awarded shares as a percentage of the original award amount (percent)	200.00%
Time Based Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 5,800,000	5,600,000	5,700,000
Nonvested awards, total compensation cost not yet recognized	$ 7,700,000
Weighted-average remaining contractual life in years, options outstanding	10 months 24 days
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Compensation expense	$ 1,100,000	$ 900,000	$ 1,000,000.0
Anniversary period from grant date	13 months
Conversion ratio	1
Employee stock option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options, contractual term (years)	10 years