Equity-Based Compensation Schedule of Stock Option Transactions (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock options outstanding, beginning of year | shares	1,996,215
Options granted | shares	425,877
Options exercised | shares	(15,000)
Options forfeited | shares	(2,817)
Options Cancelled | shares	(203,499)
Stock options outstanding, end of year | shares	2,200,776
Share-based Compensation Arrangement by Share-based Payment Award, Additional General Disclosures [Abstract]
Weighted average exercise price, beginning of year | $ / shares	$ 28.60
Weighted average exercise price, granted in period | $ / shares	21.69
Weighted average exercise price, exercised in period | $ / shares	19.37
Weighted average exercise price, forfeited in period | $ / shares	31.31
Weighted average exercise price, cancelled in period | $ / shares	21.87
Weighted average exercise price, end of year | $ / shares	$ 27.94
Options exercisable, shares | shares	1,522,326
Options exercisable, weighted average exercise price | $ / shares	$ 29.17
Unvested options, shares | shares	678,450
Unvested options, weighted average exercise price | $ / shares	$ 25.20
Weighted average remaining contractual term, options outstanding	3 years 2 months 10 days
Weighted average remaining contractual term, options exercisable	2 years 1 month 5 days
Weighted average remaining contractual term, options unvested	5 years 7 months 18 days
Aggregate intrinsic value, options outstanding | $	$ 0.0
Aggregate intrinsic value, options exercisable | $	0.0
Aggregate intrinsic value, options unvested | $	$ 0.0