SUMMARY OF ACCOUNTING POLICIES (Details 2) (USD $)	Dec. 31, 2012	Sep. 28, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Mar. 31, 2011
Customer Specific Assets Financed By Third Party Bank
Other Current Assets
Assets financed by a third party banking institution included in other current assets	$ 258,500,000
Other Current Liabilities
Assets financed by a third party banking institution included in other current liabilities	256,500,000
Global and North American Asset-Backed Securitization
Other Current Assets
Deferred purchase price receivable on transfer of assets	462,014,000	458,085,000	514,895,000	750,315,000	1,072,661,000	459,994,000
Warrant
Other Assets
Warrants to purchase common shares of certain suppliers included in other assets	$ 64,800,000