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Consolidated Statement of Cash Flows - USD ($)
$ in Millions
 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Cash flows from operating activities    
Profit Before Tax $ 2,372 $ 1,896
Finance income and expense 602 588
Share of after-tax losses of associates and joint ventures 48 20
Depreciation, amortisation and impairment 1,550 1,551
Decrease/(increase) in working capital and short-term provisions 857 (780)
Gains on disposal of intangible assets (354) (411)
Gains on disposal of investments in associates and joint ventures (776)  
Fair value movements on contingent consideration arising from business combinations 82 (44)
Non-cash and other movements (363) (511)
Cash generated from operations 4,018 2,309
Interest paid (323) (338)
Tax paid (869) (792)
Net cash outflow from operating activities 2,826 1,179
Cash flows from investing activities    
Payment of contingent consideration from business combinations (309) (353)
Purchase of property, plant and equipment (508) (370)
Disposal of property, plant and equipment 4 67
Purchase of intangible assets (314) (983)
Disposal of intangible assets 573 474
Purchase of non-current asset investments (10) (119)
Disposal of non-current asset investments   949
Movement in short-term investments, fixed deposits and other investing instruments 135 463
Payments to associates and joint ventures (55) (8)
Disposal of investments in associates and joint ventures 776  
Interest received 27 37
Net cash outflow from investing activities 319 157
Net cash inflow before financing activities 3,145 1,336
Cash flows from financing activities    
Proceeds from issue of share capital 9 9
Repayment of loans (611)  
Issue of loans 7,944  
Dividends paid (2,469) (2,398)
Hedge contracts relating to dividend payments (22) (93)
Repayment of obligations under leases (111) (107)
Movement in short-term borrowings (182) 1,353
Net cash inflow/(outflow) from financing activities 4,558 (1,236)
Net increase in cash and cash equivalents in the period 7,703 100
Cash and cash equivalents at the beginning of the period 7,546 5,223
Exchange rate effects (52) (18)
Cash and cash equivalents at the end of the period 15,197 5,305
Cash and cash equivalents 15,567 5,673
Overdrafts $ (370) $ (368)