Employee Benefit Plans (Other) (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Defined Contribution Plan, Cost Recognized	$ 5,700,000	$ 7,600,000	$ 6,000,000
Common Stock, Shares, Outstanding	89,343,000	91,254,000
Savings Plan 401k [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Common Stock, Shares, Outstanding	866,559	951,704
Deferred compensation plan with individual percentage of total shares outstanding	1.00%
Deferred Compensation, Share-based Payments [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation plan with individual percentage of salary deferral	80.00%
Plan assets at fair value at year end	30,300,000	30,500,000
Deferred compensation plan, unfunded liability	$ 34,200,000	$ 34,300,000