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Long-Term Debt (Narrative) (Details) (USD $) | 6 Months Ended |
--- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013
Debt Instrument [Line Items] |  |  |  |
Letters of credit, amount outstanding | $ 45,600,000 |  |  |
Leverage ratio, minimum threshold, current credit spread | 2.0 |  |  |
Leverage ratio, maximum threshold, current credit spread | 3.25 |  |  |
Leverage ratio, minimum threshold, increase in credit spread | 3.25 |  |  |
6.75% Senior Notes Due 2018 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior Notes | 396,700,000 |  | 396,300,000 |
6.75% Senior Notes Due 2018 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage interest on debt instrument | 6.75% |  |  |
Debt instrument, maturity date | Apr. 15, 2018 |  |  |
5.5% Senior Notes Due 2020 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Senior Notes | 350,000,000 |  | 350,000,000 |
5.5% Senior Notes Due 2020 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Percentage interest on debt instrument | 5.50% |  |  |
Maximum percentage of principal that can be redeemed with net cash proceeds from common stock offering | 35.00% |  |  |
Redemption payment as a percentage of principal, cash from common stock offering | 105.50% |  |  |
Debt instrument, maturity date | Feb. 01, 2020 |  |  |
Term Loan Facility Due 2016 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Term loan facility | 500,000,000 |  | 500,000,000 |
Term Loan Facility Due 2016 [Member] | Loans Payable [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, maturity date | Dec. 07, 2016 |  |  |
Basis spread on variable interest rates | 1.75% |  |  |
Credit spread impact leverage ratio credit agreement | 0.25% |  |  |
Revolving Credit Facility Due 2016 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maximum borrowing capacity under revolving credit facility | 1,200,000,000 |  |  |
Revolving credit facility, amount outstanding | 365,000,000 |  | 300,000,000 |
Revolving credit facility, letters of credit sublimit | 200,000,000 |  |  |
Additional borrowing capacity under the revolving credit facility | 789,400,000 |  |  |
Commitment fee on undrawn amounts | 0.30% |  |  |
Revolving Credit Facility Due 2016 [Member] | Line of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, maturity date | Dec. 07, 2016 |  |  |
Basis spread on variable interest rates | 1.75% |  |  |
Credit spread impact leverage ratio credit agreement | 0.25% |  |  |
Mortgage Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Mortgage facility | 190,100,000 | [1] | 194,700,000 | [1]
Mortgage Facility [Member] | Secured Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument, maturity date | Nov. 30, 2017 |  |  |
Mortgage facility, fixed interest rate | 5.864% |  |  |
Mortgage loans, term | 10 years |  |  |
Monthly principal and interest payments on mortgage facility | 1,700,000 |  |  |
Balloon payment for mortgage | 155,400,000 |  |  |
Capital Leases and Other Debt [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Capital leases and other debt | $ 81,400,000 |  | $ 98,900,000 |
[1] | The mortgage facility requires monthly principal and interest payments of $1.7 million based on a fixed amortization schedule with a balloon payment of $155.4 million due November 2017.

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- Definition The incremental increase, in basis points, in the credit spread under the credit agreement if the leverage ratio is greater than a specified threshold. + References No definition available. + Details
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- Definition The minimum, inclusive, leverage ratio, as defined in the credit agreement, in which the credit spread on the revolver and term loan would increase based on the pricing terms outlined in the agreement. + References No definition available. + Details
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- Definition The maximum, exclusive, leverage ratio, as defined in the credit agreement, in which the current credit spread on the revolver and term loan applies based on pricing terms outlined in the credit agreement. + References No definition available. + Details
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- Definition The minimum, inclusive, leverage ratio, as defined in the credit agreement, in which the current credit spread on the revolver and term loan applies based on pricing terms outlined in the agreement. + References No definition available. + Details
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- Definition Percentage of the debt instrument outstanding that may be redeemed with the net cash proceeds of one or more public equity offerings of the company's common stock. + References No definition available. + Details
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- Definition Payment amount as a percentage of principal at which the debt instrument may be redeemed with the net cash proceeds of one or more public equity offerings of the company's common stock. + References No definition available. + Details
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- Definition Term of mortgages on certain of our store properties that secure our mortgage facility. + References No definition available. + Details
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- Definition The maximum amount of letters of credit that can be issued under the terms of the revolving credit facilities. + References No definition available. + Details
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- Definition 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. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6455398&loc=d3e45280-112737 + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of the required periodic payments including both interest and principal payments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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- Definition Amount of payment greater than the preceding installment payments to be paid at final maturity date of debt. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for available but unused credit capacity under the credit facility. + References No definition available. + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of loans from a bank with maturities initially due after one year or beyond the normal operating cycle if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 + Details
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- Definition The interest rate applicable to the portion of the carrying amount of long-term borrowings outstanding as of the balance sheet date, including current maturities, which accrues interest at a set, unchanging rate. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 20, 22 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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