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Commitments And Contingencies, And Derivative Financial Instruments (Narrative) (Details) (USD $) | Sep. 30, 2011
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Operating leases, aggregate future lease payments | $ 832,701,000
Net aggregate future lease payments | 832,700,000
Notional amount of floating-to-fixed interest rate swap hedge | 52,200,000
Letters of credit outstanding | 309,600,000
Revolving Credit Facility [Member] |
Letters of credit outstanding | 28,700,000
Standby Letters Of Credit [Member] |
Letters of credit outstanding | $ 280,900,000

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- Definition Aggregate notional amount of interest rate derivatives, which relates to the currency amount specified in the interest rate derivative instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6935481&loc=SL5579245-113959 + Details
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