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QUARTERLY FINANCIAL DATA - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | 12 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
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Dec. 31, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2012
Boa Vista Servicos S.A.
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Jun. 30, 2011
Boa Vista Servicos S.A.
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May 31, 2011
Boa Vista Servicos S.A.
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Mar. 31, 2011
Boa Vista Servicos S.A.
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| Quarterly Financial Information [Line Items] | |||||||||||
| Percentage of interest acquired in Boa Vista Servicos S.A. ("BVS") | 15.00% | 15.00% | 15.00% | ||||||||
| Defined Benefit Plan Increase To The Service Benefit | 9.00% | ||||||||||
| Benefits paid | $ 62.6 | [1] | $ 62.6 | ||||||||
| Pension settlement charge | 38.7 | 38.7 | 0 | 0 | |||||||
| Percentage of Employees Received Lumb Sum Payment | 64.00% | ||||||||||
| Proceeds received from divestiture subsequent to Year End | $ 47.5 | ||||||||||
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| X | ||||||||||
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- Definition
Percentage of increase in service benefit. No definition available.
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| X | ||||||||||
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- Definition
Expense recorded related to pension settlement. No definition available.
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| X | ||||||||||
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- Definition
Percentage of Employees Received Lumb Sum Payment during period No definition available.
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| X | ||||||||||
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- Definition
Proceeds received from divestiture subsequent to year end. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Percentage of voting equity interests acquired in the business combination. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of payments made for which participants are entitled under a pension plan, including pension benefits, death benefits, and benefits due on termination of employment. Also includes payments made under a postretirement benefit plan, including prescription drug benefits, health care benefits, life insurance benefits, and legal, educational and advisory services. This item represents a periodic decrease to the plan obligations and a decrease to plan assets. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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