Accounts Receivable (Details) (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Dec. 31, 2011
Accounts Receivable [Abstract]
Retail and wholesale	$ 575,474,000		$ 639,842,000
Other	53,903,000		52,363,000
Less: Allowance for doubtful accounts	(104,125,000)		(107,048,000)
Accounts receivable, net	525,252,000		585,157,000
Bad debt expense	16,600,000	28,300,000
Accounts receivable and allowance for doubtful accounts, fair value adjustment			9,800,000
Customer volume discount reduction			$ 31,000,000