Debt (Details 2) (USD $) Share data in Millions, unless otherwise specified					3 Months Ended				3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013	Mar. 23, 2014 Argyros Group	Mar. 31, 2014 Accounts receivable securitization program	Mar. 31, 2013 Accounts receivable securitization program	Dec. 31, 2013 Accounts receivable securitization program	Mar. 31, 2014 Amended Line of Credit Facility	Mar. 31, 2014 Senior notes	Dec. 31, 2013 Senior notes
Entity's debt and other obligations
Maximum borrowing capacity					$ 150,000,000			$ 630,000,000
Amount outstanding	669,300,000	683,000,000			150,000,000		150,000,000		370,000,000	370,000,000
Proceeds from the accounts receivable securitization program					240,800,000	226,500,000
Payments in respect of accounts receivable securitization program					240,800,000	226,500,000
Number of common shares held	42.1		44.1	9.2
Ownership percentage				22.00%
Proceeds from Issuance of Debt									$ 370,000,000	$ 370,000,000