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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Cash Flows From Operating Activities      
Net income $ 1,919 $ 223 $ 721
Adjustments to reconcile net income to net cash provided by operating activities      
Depreciation, depletion and amortization 2,297 2,261 2,209
Deferred income taxes 405 2,073 1,087
Amortization of excess cost of equity investments 95 61 59
Change in fair market value of derivative contracts 77 40 64
Loss (gain) on early extinguishment of debt 0 4 (45)
Loss on impairments and divestitures, net (Note 4) 167 13 387
Loss on impairments and divestitures of equity investments, net (Note 4) 270 150 610
Earnings from equity investments (887) (578) (497)
Distributions of equity investment earnings 499 426 431
Changes in components of working capital, net of the effects of acquisitions and dispositions      
Accounts receivable, net (50) (78) (107)
Income tax receivable 137 7 (148)
Inventories 15 (90) 49
Other current assets (16) (25) (81)
Accounts payable 21 73 144
Accrued interest, net of interest rate swaps (22) 10 (18)
Accrued taxes 241 (37) 31
Accrued contingencies and other current liabilities 73 138 11
Rate reparations, refunds and other litigation reserve adjustments (202) (100) (32)
Other, net 4 30 (117)
Net Cash Provided by Operating Activities 5,043 4,601 4,758
Cash Flows From Investing Activities      
Proceeds from the TMPL Sale, net of cash disposed (Note 3) 2,998 0 0
Acquisitions of assets and investments (39) (4) (333)
Capital expenditures (2,904) (3,188) (2,882)
Proceeds from sale of equity interests in subsidiaries, net 0 0 1,401
Proceeds from sales of equity investments 124 0 0
Sales of property, plant and equipment, investments, and other net assets, net of removal costs (20) 118 330
Contributions to investments (433) (684) (408)
Distributions from equity investments in excess of cumulative earnings 237 374 231
Loans (to) from related parties (31) (23)  
Loans (to) from related parties     35
Other, net 0 4 1
Net Cash Used in Investing Activities (68) (3,403) (1,625)
Cash Flows From Financing Activities      
Issuances of debt 14,751 8,868 8,629
Payments of debt (14,591) (11,064) (10,060)
Debt issue costs (42) (70) (19)
Cash dividends - common shares (Note 11) (1,618) (1,120) (1,118)
Cash dividends - preferred shares (Note 11) (156) (156) (154)
Repurchases of common shares (Note 11) (273) (250) 0
Contributions from investment partner 181 485 0
Contributions from noncontrolling interests - net proceeds from KML IPO (Note 3) 0 1,245 0
Contributions from noncontrolling interests - net proceeds from KML preferred share issuances (Note 11) 0 420 0
Contributions from noncontrolling interests - other 19 12 117
Distributions to noncontrolling interests (78) (42) (24)
Other, net (17) (9) (8)
Net Cash Used in Financing Activities (1,824) (1,681) (2,637)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Deposits (146) 22 2
Net increase (decrease) in Cash, Cash Equivalents and Restricted Deposits 3,005 (461) 498
Cash, Cash Equivalents, and Restricted Deposits, beginning of period 326 787 289
Cash, Cash Equivalents, and Restricted Deposits, end of period 3,331 326 787
Cash and Cash Equivalents, beginning of period 264 684 229
Cash and Cash Equivalents, end of period 3,280 264 684
Restricted Cash Equivalents, beginning of period 62 103 60
Restricted Cash Equivalents, end of period 51 62 103
Noncash Investing and Financing Activities      
Assets acquired by the assumption or incurrence of liabilities 0 0 43
Net assets contributed to equity investments 0 0 37
Increase in property, plant and equipment from both accruals and contractor retainage 30 14  
Decrease in noncontrolling interests for distribution accrual 905 0 0
Supplemental Disclosures of Cash Flow Information      
Cash paid during the period for interest (net of capitalized interest) 1,879 1,854 2,050
Cash (refunded) paid during the period for income taxes, net $ (109) $ (140) $ 4