Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
Share data in Millions, unless otherwise specified |
3 Months Ended | 9 Months Ended | |||||
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Sep. 30, 2011
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Sep. 30, 2011
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Sep. 30, 2012
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Dec. 31, 2011
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Significant Accounting Policies [Line Items] | |||||||
Antidilutive stock options excluded from computation of earnings per share | 3.2 | 2.1 | |||||
Fair value of long term debt | $ 1,110,000,000 | $ 1,090,000,000 | |||||
Carrying value of long term debt | 950,000,000 | 970,000,000 | |||||
Fair value of interest rate swaps | 13,700,000 | 14,800,000 | |||||
Variable interest maximum exposure to loss | 12,600,000 | ||||||
Fair Value, Measurements, Recurring [Member]
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Significant Accounting Policies [Line Items] | |||||||
Fair value of interest rate swaps | $ 13,700,000 | [1] | |||||
Interest rate swap term | 5 years | ||||||
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X | ||||||||||
- Definition
Long Term Debt, Carrying Amount No definition available.
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X | ||||||||||
- Definition
Maturity Of Interest Rate Swaps No definition available.
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X | ||||||||||
- Details
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X | ||||||||||
- Definition
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
Fair value as of the balance sheet date of interest rate derivative assets, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized as assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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X | ||||||||||
- Definition
The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. No definition available.
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X | ||||||||||
- Definition
The reporting entity's maximum amount of exposure to loss as a result of its involvement with the Variable Interest Entity (VIE). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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