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| Derivatives designated as cash flow hedges: | | | | | | | | | | | | | | | |
| Cross-currency interest rate swaps | Prepaid expenses and other current assets | | $ | 7 | | | Prepaid expenses and other current assets | | $ | — | | | Other current liabilities | | $ | (9) | | | Other current liabilities | | $ | (104) | |
| Cross-currency interest rate swaps | Other non- current assets | | 5 | | | Other non- current assets | | — | | | Other non- current liabilities | | — | | | Other non- current liabilities | | (21) | |
| Interest rate swaps | Prepaid expenses and other current assets | | 9 | | | Prepaid expenses and other current assets | | — | | | Other current liabilities | | — | | | Other current liabilities | | — | |
| Interest rate swaps | Other non- current assets | | 5 | | | Other non- current assets | | — | | | Other non- current liabilities | | — | | | Other non- current liabilities | | — | |
| Total derivatives designated as hedging instrument | | | $ | 26 | | | | | $ | — | | | | | $ | (9) | | | | | $ | (125) | |
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| Derivatives designated as fair value hedges: | | | | | | | | | | | | | | | |
| Cross-currency interest rate swaps | Prepaid expenses and other current assets | | $ | 2 | | | Prepaid expenses and other current assets | | $ | — | | | Other current liabilities | | $ | — | | | Other current liabilities | | $ | — | |
| Cross-currency interest rate swaps | Other non- current assets | | 82 | | | Other non- current assets | | — | | | Other non- current liabilities | | — | | | Other non- current liabilities | | — | |
| Total derivatives not designated as hedging instruments | | | $ | 84 | | | | | $ | — | | | | | $ | — | | | | | $ | — | |
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| Derivatives designated as net investment hedges: | | | | | | | | | | | | | | | |
| Cross-currency interest rate swaps | Prepaid expenses and other current assets | | 23 | | | Prepaid expenses and other current assets | | — | | | Other current liabilities | | — | | | Other current liabilities | | (1) | |
| Cross-currency interest rate swaps | Other non- current assets | | — | | | Other non- current assets | | — | | | Other non- current liabilities | | (5) | | | Other non- current liabilities | | — | |
| Total derivatives designated as hedging instrument | | | $ | 23 | | | | | $ | — | | | | | $ | (5) | | | | | $ | (1) | |
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| Derivatives not designated as hedging instruments: | | | | | | | | | | | | | | | |
| Cross-currency interest rate swaps | Prepaid expenses and other current assets | | — | | | Prepaid expenses and other current assets | | — | | | Other current liabilities | | (1) | | | Other current liabilities | | (52) | |
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| Total derivatives not designated as hedging instruments | | | $ | — | | | | | $ | — | | | | | $ | (1) | | | | | $ | (52) | |
| Total derivatives | | | $ | 133 | | | | | $ | — | | | | | $ | (15) | | | | | $ | (178) | |