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Long-Term Debt - Redemption Price, Percentage (Detail) | 9 Months Ended
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Sep. 30, 2013
Beginning on May 15, 2018 [Member] | 5.0% Senior Subordinated Notes due 2023 [Member] |
Debt Instrument, Redemption [Line Items] |
Redemption Price | 102.50%
Beginning on May 15, 2019 [Member] | 5.0% Senior Subordinated Notes due 2023 [Member] |
Debt Instrument, Redemption [Line Items] |
Redemption Price | 101.667%
Beginning on May 15, 2020 [Member] | 5.0% Senior Subordinated Notes due 2023 [Member] |
Debt Instrument, Redemption [Line Items] |
Redemption Price | 100.833%
Beginning on May 15, 2021 and Thereafter [Member] | 5.0% Senior Subordinated Notes due 2023 [Member] |
Debt Instrument, Redemption [Line Items] |
Redemption Price | 100.00%
Beginning on July 15, 2017 [Member] | 7.0% Senior Subordinated Notes due 2022 [Member] |
Debt Instrument, Redemption [Line Items] |
Redemption Price | 103.50%
Beginning on July 15, 2018 [Member] | 7.0% Senior Subordinated Notes due 2022 [Member] |
Debt Instrument, Redemption [Line Items] |
Redemption Price | 102.333%
Beginning on July 15, 2019 [Member] | 7.0% Senior Subordinated Notes due 2022 [Member] |
Debt Instrument, Redemption [Line Items] |
Redemption Price | 101.167%
Beginning on July 15, 2020 and Thereafter [Member] | 7.0% Senior Subordinated Notes due 2022 [Member] |
Debt Instrument, Redemption [Line Items] |
Redemption Price | 100.00%

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- Definition Percentage price of original principal amount of debt at which debt can be redeemed by the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 470 -Section 50 -Paragraph 3 -Subparagraph e -URI http://asc.fasb.org/extlink&oid=6479336&loc=d3e64711-112823 + Details
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