Debt Agreements, Number

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Number of Aircraft Delivered

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Prepayment of Long Term Debt, Expected Prepayment Amount

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- Definition

Prepaid long term debt

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of the required periodic payments including both interest and principal payments.

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Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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- Definition

Total of the portions of the carrying amounts as of the balance sheet date of long-term debt, which may include notes payable, bonds payable, debentures, mortgage loans, and commercial paper, which are scheduled to be repaid within one year or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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Sum of the carrying values as of the balance sheet date of all long-term debt, which is debt initially having maturities due after one year from the balance sheet date or beyond the operating cycle, if longer, but excluding the portions thereof scheduled to be repaid within one year (current maturities) or the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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LONG-TERM DEBT - SCHEDULE OF LONG-TERM DEBT (DETAILS) (USD $) In Millions, unless otherwise specified	9 Months Ended							3 Months Ended	6 Months Ended
	Sep. 30, 2011 debtAgreements	Sep. 30, 2010	Dec. 31, 2010	Sep. 30, 2011 Fixed rate notes payable due through 2024 [Member]	Dec. 31, 2010 Fixed rate notes payable due through 2024 [Member]	Sep. 30, 2011 Variable rate notes payable due through 2024 [Member]	Dec. 31, 2010 Variable rate notes payable due through 2024 [Member]	Sep. 30, 2011 Q400 [Member]	Jun. 30, 2011 Q400 [Member] aircraft
Debt Instrument [Line Items]
Long-term Debt	$ 1,392.4		$ 1,534.2	$ 1,063.0	$ 1,233.6	$ 329.4	$ 300.6
Less current portion	213.6		221.2
Long-term debt, net of current portion	1,178.8		1,313.0
Scheduled debt payments	111.0
Number of Debt Agreements	7
Prepayment of debt balance	137.3
Proceeds from Issuance of Long-term Debt	106.5	0						106.5
Number of Aircraft Delivered									6
Prepayment of Long Term Debt, Expected Prepayment Amount	$ 12.5