Accounts Receivable (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Accounts Receivable [Abstract]
Retail and Wholesale	$ 606,209,000		$ 606,209,000		$ 639,842,000
Other	52,377,000		52,377,000		52,363,000
Less: Allowance for doubtful accounts	(112,768,000)		(112,768,000)		(107,048,000)
Accounts receivable, net	545,818,000		545,818,000		585,157,000
Accounts receivable and allowance for doubtful accounts, fair value adjustment					9,800,000
Bad debt expense	24,100,000	18,100,000	40,700,000	46,400,000
Customer volume discount reduction					$ 31,000,000