Subsequent Events (Narrative) (USD $)	6 Months Ended										3 Months Ended			6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010		Mar. 31, 2011 Option to purchase additional railcars [Member]	Jun. 30, 2011 Railcars in incremental portion of subsequent order [Member]	Jun. 30, 2011 Railcars in subsequent order included in 2nd quarter commitments [Member]	Jun. 30, 2011 Railcars ordered subsequent to filing date [Member]	Jun. 30, 2011 Railcars remaining to be purchased under existing commitments [Member]	Mar. 31, 2011 Railcars committed to purchase in Q1 2011 [Member]	Jun. 30, 2011 Trade Finance Conduit Facility [Member]	Jun. 30, 2011 2013 Series A Notes [Member]	Mar. 31, 2011 2013 Series A Notes [Member]	Jun. 30, 2011 2014 Series A Notes [Member]	Jun. 30, 2011 Senior Secured First Lien Term Loan [Member]
Subsequent event, date										Aug. 05, 2011				Jul. 15, 2011
Repayments of term debt	$ 6,275,600,000	$ 7,887,100,000	[1]											$ 500,000,000
Principal outstanding balance														3,000,000,000
Acceleration of FSA amortization											$ 66,000,000	$ 25,000,000	$ 47,000,000	$ 15,000,000
Railcars				1,750	2,750	2,250	5,000	5,550	3,500

[1] These restated balances were disclosed in Note 26 of the Company's Form 10-K for the year ended December 31, 2010.