Statement of Other Comprehensive Income (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2011		Mar. 31, 2011		Dec. 31, 2010		Mar. 31, 2010		Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Net income	$ 36,562	[1],[2]	$ 78,410	[1],[2]	$ 31,900	[1],[2]	$ 79,843	[1],[2]	$ 607,421	$ 515,653	$ 152,485
Changes related to cash flow derivative hedges									(76,106)	(123,180)	458,220
Change in defined benefit plans									(6,698)	(5,422)	(2,562)
Foreign currency translation adjustments									(18,200)	(29,065)	47,011
Total comprehensive income									506,417	357,986	655,154
Accumulated net gain (loss) on cash flow derivative hedges at beginning of year			42,848				166,028		42,848	166,028	(292,192)
Net (loss) gain on cash flow derivative hedges									70,480	(54,877)	376,128
Net (gain) loss reclassified into earnings									(146,586)	(68,303)	82,092
Accumulated net gain (loss) on cash flow derivative hedges at end of year	(33,258)				42,848				(33,258)	42,848	166,028
Accumulated other comprehensive gain at beginning of the year			25,066						25,066
Current-period change									(101,004)
Accumulated other comprehensive gain at end of year	(75,938)				25,066				(75,938)	25,066
Changes related to cash flow derivative hedges
Accumulated other comprehensive gain at beginning of the year			42,848						42,848
Current-period change									(76,106)
Accumulated other comprehensive gain at end of year	(33,258)								(33,258)
Change in defined benefit plans
Accumulated other comprehensive gain at beginning of the year			(23,558)						(23,558)
Current-period change									(6,698)
Accumulated other comprehensive gain at end of year	(30,256)								(30,256)
Foreign currency translation adjustments
Accumulated other comprehensive gain at beginning of the year			5,776						5,776
Current-period change									(18,200)
Accumulated other comprehensive gain at end of year	$ (12,424)								$ (12,424)

[1] Amounts for 2010 and amounts for the first quarter of 2011 include a revision for the correction of an error in the manner in which we were amortizing certain guarantee fees. Refer to the tables below which present the effects of the revision on the Company's Consolidated Statements of Operations for these respective periods.

[2] The first quarter of 2010 included a one-time gain of approximately $85.6 million, net of costs and payments to insurers, related to the settlement of our case against Rolls Royce.