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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Operating activities:    
Net income (loss) $ 608 $ (4,261)
Adjustments to reconcile net income (loss) to net cash provided by operations:    
Depreciation and amortization 1,010 1,162
Impairment of long-lived assets and assets held for sale 401 6,314
Net change in operating assets and liabilities (1,881) (1,627)
Deferred income taxes – net and uncertain tax positions 13 (656)
Stock-based compensation 86 91
Net loss (gain) from investments and from sale of long lived assets 109 (232)
Research and development in process 0 40
Other items (4) 54
Net cash provided by (used in) operating activities 342 885
Investing activities:    
Beneficial interest collected in exchange for securitized accounts receivables 1,278 1,102
Purchases of property, plant and equipment (409) (402)
Proceeds from sale of business and long lived assets 269 54
Proceeds from sale of investments 172 12
Other investing activities (33) (44)
Net cash provided by investing activities 1,277 722
Financing activities:    
Repayment of senior notes and loans and other long-term liabilities (1,475) (1,871)
Proceeds from short term debt 500 231
Repayment of short-term debt (200) (116)
Redemption of convertible senior notes (491) 0
Other financing activities (5) (4)
Net cash used in financing activities (1,671) (1,760)
Translation adjustment on cash and cash equivalents (80) 5
Net change in cash and cash equivalents (132) (148)
Balance of cash and cash equivalents at beginning of period 2,177 1,975
Balance of cash and cash equivalents at end of period 2,045 1,827
Non-cash financing and investing activities:    
Beneficial interest obtained in exchange for securitized accounts receivables $ 1,310 $ 1,055