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CONSOLIDATED STATEMENTS OF CASH FLOWS - 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 $ 1,306 $ 34 $ 1,719 $ 182
Adjusted for the following items:        
Earnings from investments in associates and joint ventures, net of distributions received (10) 27 (18) 72
Depreciation and amortization expense 492 375 961 775
Mark-to-market on hedging items, provisions and other (1,254) 84 (1,348) 265
Deferred income tax expense (recovery) 212 8 252 56
Changes in non-cash working capital, net (182) 87 (276) (13)
Cash from operating activities 564 615 1,290 1,337
Investing Activities        
Acquisition of subsidiaries, net of cash acquired (49) 0 (145) 0
Cash flows from losing control of subsidiaries or other businesses, classified as investing activities 2,588 0 2,588 722
Additions of investments in associates and joint ventures 0 0 412 0
Purchase of long lived assets (414) (275) (746) (662)
Disposal of long lived assets 12 9 23 20
Purchase of financial assets (331) (271) (502) (534)
Sale of financial assets and other 230 168 526 278
Net settlement of foreign exchange hedging items (18) (1) (17) (83)
Cash used by investing activities 2,018 (368) 2,139 (93)
Financing Activities        
Distributions to general partner (50) (47) (100) (93)
Distributions to other unitholders (255) (236) (508) (472)
Subsidiary distributions to non-controlling interest (306) (168) (538) (647)
Capital Provided By Non-controlling Interest, Cash 0 45 100 223
Capital provided to non-controlling interest (1,408) 0 (1,408) (616)
Proceeds From Partial Disposition Of Subsidiaries To Non-Controlling Interest, Net Of Taxes 0 0 0 168
Deposit Received From Parent (744) 0 (344) 0
Proceeds from corporate borrowings 244 275 244 275
Net proceeds from commercial paper program 406 0 496 0
Proceeds from corporate credit facility 1,539 512 1,830 1,455
Repayment of corporate credit facility (1,816) (515) (2,961) (1,065)
Proceeds from subsidiary borrowings 1,005 570 1,597 2,210
Repayment of subsidiary borrowings (555) (498) (974) (1,979)
Payments of lease liabilities, classified as financing activities (256) (43) (369) (86)
Preferred units issued 0 0 194 0
Payments to Acquire Partial Interest From Non-Controlling Interest (283) 0 (283) 0
Partnership units issued, net of issuance costs 3 3 6 5
Cash from financing activities (2,476) (102) (3,018) (622)
Cash and cash equivalents        
Change during the year 106 145 411 622
Cash and cash equivalents classified as part of disposal group held for sale 0 0 (6) 0
Impact of foreign exchange on cash 29 9 3 (69)
Balance, beginning of year 1,140 1,226 867 827
Balance, end of year $ 1,275 $ 1,380 $ 1,275 $ 1,380