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Consolidated Statements of Cash Flows - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Operating activities:    
Net income $ 1,136 $ 1,015
Adjustments to reconcile net income to net cash provided by operating activities:    
Amortization of Debt Issuance Costs and Discounts 10 13
Depreciation and amortization [1] 326 317
Gain on equity method investments 0 20
Income from equity method investments (186) (157)
Distributions from unconsolidated affiliates 188 180
Change in fair value of derivatives 4 8
Changes in:    
Receivables (100) 95
Inventories (6) (4)
Current accounts payable and other current assets and liabilities (76) (124)
Assets and liabilities - related parties (35) (46)
Right of use assets and operating lease liabilities (1) (1)
Deferred revenue (12) 9
All other, net (2) 6
Net cash provided by operating activities 1,246 1,291
Net Cash Provided by (Used in) Investing Activities [Abstract]    
Additions to property, plant and equipment (267) (255)
Acquisitions, net of cash acquired 237 622
Disposal of assets 1 0
Payments to Acquire Interest in Joint Venture 119 119
Investments - redemptions, repayments, return of capital and sales proceeds 21 0
Net cash used in investing activities (601) (996)
Net Cash Provided by (Used in) Financing Activities [Abstract]    
Long-term debt borrowings 1,977 0
Long-term debt - repayments (500) 0
Debt issuance costs 19 0
Unit repurchases [2] (100) (75)
Distributions to noncontrolling interests (11) (11)
Distributions to Series A preferred unitholders 6 23
Distributions to LP unitholders (972) (853)
Contributions from MPC 7 10
All other, net (6) (6)
Net cash used in financing activities 370 (958)
Net change in cash, cash equivalents and restricted cash 1,015 (663)
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Beginning Balance 1,519 1,048
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Ending Balance $ 2,534 $ 385
[1] Depreciation and amortization attributable to Crude Oil and Products Logistics was $133 million and $130 million for the three months ended March 31, 2025 and March 31, 2024, respectively. Depreciation and amortization attributable to Natural Gas and NGL Services was $193 million and $187 million for the three months ended March 31, 2025 and March 31, 2024, respectively.
[2] Cash paid for common units repurchased and average cost per unit includes commissions paid to brokers during the period.