Fair Value Measurements (Details 2) (Flight Equipment, USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Inputs to Recurring and Non-Recurring Fair Value Measurements Categorized as Level 3
Estimated useful life over which aircraft will be leased based on general assumption	25 years	25 years
Non-recurring basis \| Level 3
Inputs to Recurring and Non-Recurring Fair Value Measurements Categorized as Level 3
Fair Value	$ 228,000	$ 161,000
Non-recurring basis \| Level 3 \| Low end of range \| Income Approach
Inputs to Recurring and Non-Recurring Fair Value Measurements Categorized as Level 3
Discount Rate (as a percent)		8.00%
Remaining Holding Period	0 years	0 years
Present Value of Non-Contractual Cash Flows as a Percentage of Fair Value	0.00%	0.00%
Non-recurring basis \| Level 3 \| High end of range \| Income Approach
Inputs to Recurring and Non-Recurring Fair Value Measurements Categorized as Level 3
Discount Rate (as a percent)		14.50%
Remaining Holding Period	9 years	9 years
Present Value of Non-Contractual Cash Flows as a Percentage of Fair Value	100.00%	100.00%
Non-recurring basis \| Level 3 \| Weighted Average \| Income Approach
Inputs to Recurring and Non-Recurring Fair Value Measurements Categorized as Level 3
Discount Rate (as a percent)	8.00%	10.50%
Remaining Holding Period	1 year	2 years
Present Value of Non-Contractual Cash Flows as a Percentage of Fair Value	23.00%	33.00%

ILFC Holdings, Inc. S-1/A