| Component: (Network and Table) | |
|---|---|
| Network | 171 - Disclosure - Income Taxes - Schedule of Reconciliation of Beginning and Ending Amount of Tax Reserves for Uncertain Tax Positions (Detail) (http://imetrix.edgar-online.com/taxonomy/role/DisclosureIncomeTaxesScheduleOfReconciliationOfBeginningAndEndingAmountOfTaxReservesForUncertainTaxPositions) |
| Table | Schedule Of Unrecognized Tax Benefits [Table] |
| Reporting Entity [Axis] | 0001404624 (http://www.sec.gov/CIK) |
| Legal Entity [Axis] | Entity [Domain] |
| Unrecognized Tax Benefits [Line Items] | Period [Axis] | ||
|---|---|---|---|
2012-01-01 - 2012-12-31 | 2011-01-01 - 2011-12-31 | 2010-01-01 - 2010-12-31 | |
Beginning Balance, unrecognized tax benefits | 3,800,000 | 8,300,000 | 9,900,000 |
Gross increase - prior period tax positions | xsi:nil | xsi:nil | xsi:nil |
Gross decrease - lapse in statute of limitations | (400,000) | (1,600,000) | |
Gross increase - current period tax positions | 200,000 | 200,000 | 200,000 |
Gross decrease - current period tax positions | (3,100,000) | (3,100,000) | (1,800,000) |
Ending Balance, unrecognized tax benefits | 500,000 | 3,800,000 | 8,300,000 |