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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
OPERATING ACTIVITIES      
Consolidated net income (loss) $ (1,446) $ 179 $ 570
Discontinued operations (120) 88 77
Net income (loss) from continuing operations (1,326) 91 493
Non-cash items:      
Depreciation and amortization of assets 1,117 1,045 982
Impairment losses of longed-lived assets 1,520 64 62
Share of profit of equity accounted investees (49) (49) (34)
Results on sale of subsidiaries, other disposal groups and others (4) (49) (13)
Financial expense, financial income and other items, net 887 782 724
Income taxes 52 162 224
Changes in working capital, excluding income taxes 197 98 (55)
Cash flow provided by operating activities from continuing operations 2,394 2,144 2,383
Interest and coupons on perpetual debentures paid (703) (694) (741)
Income taxes paid (128) (168) (207)
Net cash flow provided by operating activities from continuing operations 1,563 1,282 1,435
Net cash flow provided by operating activities from discontinued operations 15 71 132
Net cash flows provided by operating activities 1,578 1,353 1,567
INVESTING ACTIVITIES      
Purchase of property, machinery and equipment, net (538) (651) (601)
Disposal (acquisition) of subsidiaries and other disposal groups, net 628 500 (26)
Intangible assets (53) (116) (187)
Non-current assets and others, net 51 5 (1)
Net cash flows used in investing activities 88 (262) (815)
FINANCING ACTIVITIES      
Proceeds from new debt instruments 4,210 3,331 2,325
Debt repayments (4,572) (3,284) (2,745)
Other financial obligations, net (794) (233) (578)
Share repurchase program (83) (50) (75)
Decrease in non-controlling interests (105) (31)  
Derivative financial instruments 12 (56) 20
Securitization of trade receivables (26) (6) 32
Dividends paid   (150)  
Non-current liabilities, net (138) (96) (142)
Net cash flows used in financing activities (1,496) (575) (1,163)
Increase (decrease) in cash and cash equivalents from continuing operations 155 445 (543)
Increase in cash and cash equivalents from discontinued operations 15 71 132
Foreign currency translation effect on cash (8) (37) 21
Cash and cash equivalents at beginning of period 788 309 699
CASH AND CASH EQUIVALENTS AT END OF PERIOD 950 788 309
Changes in working capital, excluding income taxes:      
Trade receivables 25 (8) 15
Other accounts receivable and other assets (22) 33 (82)
Inventories 24 96 (148)
Trade payables 20 (41) 231
Other accounts payable and accrued expenses 150 18 (71)
Changes in working capital, excluding income taxes $ 197 $ 98 $ (55)