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Consolidated Statements of Cash Flow - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
OPERATING ACTIVITIES        
Net income $ 694 $ 622 $ 1,524 $ 1,285
Adjustments for the following items:        
Depreciation 500 566 1,007 1,090
Finance costs, net 100 86 194 197
Impairment (reversals) charges (notes 9b and 13) 2 23 (87) (313)
Income tax expense (note 10) 343 258 717 644
Income from investment in equity investees (104) (61) (207) (115)
Loss (gain) on sale of non-current assets (7) 8 (10) (52)
Loss on currency translation 7 2 11 18
Change in working capital (note 11) (197) (8) (249) (314)
Other operating activities (note 11) (76) 25 (116) 106
Operating cash flows before interest and income taxes 1,262 1,521 2,784 2,546
Interest paid (131) (130) (153) (154)
Income taxes paid [1] (492) (360) (690) (472)
Net cash provided by operating activities 639 1,031 1,941 1,920
Investing Cash Flows – Other Items        
Capital expenditures (note 5) (658) (509) (1,197) (960)
Sales proceeds 1 9 5 16
Investment sales 0 206 0 206
Divestitures (note 4) 19 0 19 256
Dividends received from equity method investments 35 29 161 54
Shareholder loan repayments from equity method investments 0 1 1 1
Net cash used in investing activities (603) (264) (1,011) (427)
Financing Cash Flows – Other Items        
Lease repayments 4 7 10 12
Debt repayments 0 0 (7) (351)
Dividends (159) (124) (317) (246)
Return of capital (note 16) 250 0 250 0
Funding from non-controlling interests (note 17) 6 0 12 1
Disbursements to non-controlling interests (note 17) (206) (217) (471) (434)
Other financing activities (note 11) 43 0 64 (15)
Net cash used in financing activities (570) (348) (979) (1,057)
Effect of exchange rate changes on cash and equivalents 0 (3) (1) (7)
Net increase (decrease) in cash and equivalents (534) 416 (50) 429
Cash and equivalents at the beginning of period 5,672 3,327 5,188 3,314
Cash and equivalents at the end of period $ 5,138 $ 3,743 $ 5,138 $ 3,743
[1] Income taxes paid excludes $57 million (2020: $45 million) for the three months ended June 30, 2021 and $93 million (2020: $69 million) for the six months ended June 30, 2021 of income taxes payable that were settled against offsetting VAT receivables.