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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
OPERATING ACTIVITIES      
Net income $ 2,107 $ 1,707 $ 1,827
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 1,009 1,315 1,364
Deferred income taxes 27 41 100
Provision for uncollectible accounts 27 66 51
Accrued interest on affiliate note 57 61 61
Net loss on early retirement of debt 8 63 0
Changes in current assets and liabilities:      
Accounts receivable 36 88 (19)
Accounts payable (41) (58) (50)
Accrued income and other taxes (1) 1 (46)
Other current assets and liabilities, net (176) (220) 60
Other current assets and liabilities - affiliates, net 0 0 1
Changes in other noncurrent assets and liabilities, net (13) 52 15
Changes in affiliate obligations, net (12) (70) (49)
Other, net 5 25 17
Net cash provided by operating activities 3,033 3,071 3,332
INVESTING ACTIVITIES      
Capital expenditures (797) (1,091) (1,055)
Changes in advances to affiliates 0 1,842  
Payments for advance to affiliate     (694)
Proceeds from sale of property, plant and equipment and other assets 46 3 26
Net cash (used in) provided by investing activities (751) 754 (1,723)
FINANCING ACTIVITIES      
Net proceeds from issuance of long-term debt 0 115 0
Payments of long-term debt (1,186) (2,796) (12)
Dividends paid (570) (1,725) (1,600)
Changes in advances from affiliates (537) 592 0
Net cash used in financing activities (2,293) (3,814) (1,612)
Net (decrease) increase in cash, cash equivalents and restricted cash (11) 11 (3)
Cash, cash equivalents and restricted cash at beginning of period 15 4 7
Cash, cash equivalents and restricted cash at end of period 4 15 4
Supplemental cash flow information:      
Income taxes paid, net (697) (556) (539)
Interest paid (net of capitalized interest of $19, $29 and $27) (188) (310) (378)
Supplemental noncash information of investing activities:      
Sale of property, plant and equipment in exchange for receivable 56 0 0
Cash, cash equivalents and restricted cash:      
Cash and cash equivalents 2 14 2
Restricted cash - noncurrent 2 1 2
Total $ 4 $ 15 $ 4