| Schedule II - Valuation and Qualifying Accounts |
SCHEDULE II — VALUATION AND QUALIFYING ACCOUNTS (in thousands) | | | | | | | | | | | | | | | | | | Balance at Beginning of Period | | Charged to Costs and Expenses | | Deductions and Other Adjustments (1) | | Balance at End of Period | Year Ended December 31, 2014 | |
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| | |
| Allowance for doubtful accounts | $ | 54,531 |
| | $ | 114,784 |
| | $ | (114,300 | ) | | $ | 55,015 |
| Valuation allowance for deferred tax assets | $ | 4,335,913 |
| | $ | 610,467 |
| | $ | (77,876 | ) | | $ | 4,868,504 |
| Year Ended December 31, 2013 | |
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| | |
| | |
| Allowance for doubtful accounts | $ | 104,897 |
| | $ | 111,460 |
| | $ | (161,826 | ) | | $ | 54,531 |
| Valuation allowance for deferred tax assets | $ | 330,739 |
| | $ | 4,052,410 |
| | $ | (47,236 | ) | | $ | 4,335,913 |
| Year Ended December 31, 2012 | |
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| | |
| | |
| Allowance for doubtful accounts | $ | 62,030 |
| | $ | 214,454 |
| | $ | (171,587 | ) | | $ | 104,897 |
| Valuation allowance for deferred tax assets | $ | 180,545 |
| | $ | 151,286 |
| | $ | (1,092 | ) | | $ | 330,739 |
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_______________________________________ | | (1) | Includes the impact of foreign currency translation adjustments. |
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