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Associated companies (Details 4) - USD ($) $ in Millions | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2020 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Disclosure of associates [line items] |  |  |  |
Current assets |  | $ 29,673 | $ 29,504 |
Non-current assets |  | 102,386 | 88,866 |
Current liabilities |  | 33,059 | 28,264 |
Non-current liabilities |  | 42,334 | 34,555 |
Profit (loss) |  | 8,071 | 11,737 | $ 12,614
Other comprehensive income |  | 3,330 | (210) | (406)
Comprehensive income |  | $ 11,401 | 11,527 | $ 12,208
Roche Holding AG, Switzerland |  |  |  |
Disclosure of associates [line items] |  |  |  |
Current assets | $ 27,700 |  | 31,300 |
Non-current assets | 55,700 |  | 56,400 |
Current liabilities | 22,500 |  | 24,100 |
Non-current liabilities | 23,100 |  | 23,100 |
Revenue | 30,400 |  | 63,800 |
Profit (loss) | 7,200 |  | 12,300 |
Other comprehensive income | (700) |  | (900) |
Comprehensive income | $ 6,500 |  | $ 11,400 |

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