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Details to the consolidated cash flow statements (Details 5) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Statement [line items] |  |  |
Net cash flows | $ (9,957) | $ (3,760) | $ (13,683)
Acquisitions |  |  |
Statement [line items] |  |  |
Net assets recognized as a result of acquistions of businesses | (10,173) | (4,124) | (13,660)
Fair value of previously held equity interests | 7 | 33 |
Contingent consideration payables, net | 98 | 242 | (5)
Payments, deferred consideration and other adjustments, net | 62 | (2) | (36)
Net cash flows | (10,006) | (3,851) | (13,701)
Divestments |  |  |
Statement [line items] |  |  |
Net cash flows | $ 49 | 91 | $ 18
Net cash inflows from divestment |  | 95 |
Net cash outflows from divestments |  | 4 |
Current assets divested |  | 96 |
Cash and cash equivalents in subsidiary or businesses acquired or disposed |  | 11 |
Divested business |  | 196 |
Divestments | Non-current assets [member] |  |  |
Statement [line items] |  |  |
Divested business |  | 159 |
Divestments | Current liabilities [member] |  |  |
Statement [line items] |  |  |
Liabilities in subsidiary or businesses acquired or disposed |  | 41 |
Divestments | Non-current liabilities [member] |  |  |
Statement [line items] |  |  |
Liabilities in subsidiary or businesses acquired or disposed |  | $ 18 |

X
- Definition The acquisition-date fair value of equity interest in the acquiree held by the acquirer immediately before the acquisition date in a business combination achieved in stages. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B64 -Subparagraph p -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_p_i&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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