Leases (Future Minimum Lease Payments For Operating Leases And Capital Leases) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Leases [Abstract]
Capital Leases, 2012	$ 25,833
Capital Leases, 2013	22,891
Capital Leases, 2014	19,883
Capital Leases, 2015	11,683
Capital Leases, Total minimum lease payments	80,290
Amount representing interest	(4,912)
Present value of minimum lease payments	75,378
Current maturities of obligations under capital leases	(23,476)
Long-term obligations under capital leases	51,902
Operating Leases, 2012	75,746
Operating Leases, 2013	53,192
Operating Leases, 2014	33,963
Operating Leases, 2015	19,505
Operating Leases, 2016	14,983
Operating Leases, Thereafter (through 2026)	29,302
Operating Leases, Total minimum lease payments	$ 226,691

Long-Term Obligations Under Capital Leases

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal, through the balance sheet date and due to be paid within one year (or one operating cycle, if longer) of the balance sheet date.

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The total of contractually required rental payments on leases meeting the criteria for capitalization.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within one year of the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the fourth year from the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the third year from the balance sheet date.

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Contractually required rental payments on leases meeting the criteria for capitalization, due within the second year from the balance sheet date.

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Amount necessary to reduce net minimum lease payments to present value calculated at the lesser of the interest rate implicit in the lease (if known) or the entity's incremental borrowing rate (as defined) at inception of the lease.

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The discounted value of future cash flows under leases meeting the criteria for capitalization.

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The total of future contractually required payments on leases defined as operating.

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the fifth year of the balance sheet date relating to leases defined as operating.

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due within the second year of the balance sheet date relating to leases defined as operating.

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For leases having an initial or remaining non-cancelable letter-terms in excess of one year, required rental payments due after the fifth year from the balance sheet date on leases defined as operating.

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