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Schedule of Valuation and Qualifying Accounts (Details) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2011
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Dec. 31, 2010
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Dec. 31, 2009
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Allowance for doubtful accounts [Member]
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| Schedule of Valuation and Qualifying Accounts | |||
| Balance, January 1 | $ 10,222 | $ 8,667 | $ 10,860 |
| Charged to Expenses (Benefit) | 33,164 | 32,379 | 30,602 |
| Write-offs/Payments/Other | (33,454) | (30,824) | (32,795) |
| Balance, December 31 | 9,932 | 10,222 | 8,667 |
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Deferred tax assets-valuation allowance [Member]
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| Schedule of Valuation and Qualifying Accounts | |||
| Balance, January 1 | 3,551,288 | 3,615,332 | 3,476,583 |
| Charged to Expenses (Benefit) | (166,452) | (21,749) | 138,749 |
| Write-offs/Payments/Other | (24,096) | (42,295) | |
| Balance, December 31 | $ 3,360,740 | $ 3,551,288 | $ 3,615,332 |
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- Details
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- Definition
Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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