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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Operating activities      
Net income $ 1,722,221 $ 1,499,706 $ 612,809
Adjustments to reconcile net income to net cash provided by operating activities:      
Depreciation and amortization 626,132 621,701 578,662
Impairment charges 0 0 644,930
Equity in net earnings from investments (147,720) (122,520) (143,241)
Distributions received from unconsolidated affiliates 146,718 123,010 144,352
Deferred income taxes 463,419 472,057 186,730
Other, net 91,790 94,091 35,327
Changes in assets and liabilities:      
Accounts receivable (87,274) (610,531) (1,297)
NGLs and natural gas in storage, net of commodity imbalances (62,149) (105,038) 172,316
Accounts payable (26,106) 622,425 (80,257)
Risk-management assets and liabilities 197,460 (93,713) (187,458)
Other assets and liabilities, net (18,536) 45,084 (63,805)
Cash provided by operating activities 2,905,955 2,546,272 1,899,068
Investing activities      
Capital expenditures (less allowance for equity funds used during construction) (1,202,057) (696,854) (2,195,381)
Distributions received from unconsolidated affiliates in excess of cumulative earnings 20,267 19,363 31,808
Other, net 42,554 12,199 (106,956)
Cash used in investing activities (1,139,236) (665,292) (2,270,529)
Financing activities      
Dividends paid (1,671,582) (1,667,431) (1,605,366)
Borrowing (repayment) of short-term borrowings, net 0 0 (220,000)
Issuance of long-term debt, net of discounts 869,393 0 3,244,777
Repayment of long-term debt (895,814) (604,894) (1,457,222)
Issuance of common stock 32,442 32,791 969,759
Other (27,322) (19,551) (56,949)
Cash provided by (used in) financing activities (1,692,883) (2,259,085) 874,999
Change in cash and cash equivalents 73,836 (378,105) 503,538
Cash and cash equivalents at beginning of period 146,391 524,496 20,958
Cash and cash equivalents at end of period 220,227 146,391 524,496
Supplemental cash flow information:      
Cash paid for interest, net of amounts capitalized 581,663 691,897 760,984
Cash paid for income taxes, net of refunds $ 58,935 $ 8,864 $ 342