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Supplemental Cash Flow Information (Tables) | 3 Months Ended
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Mar. 31, 2017
Supplemental Cash Flow Elements [Abstract] |
Summary of Supplemental Cash Flow Information |
| Three Months Ended March 31,
(In millions) | 2017 |  | 2016
Net cash provided by operating activities included: |  |  |
Interest paid (net of amounts capitalized) | $ | 157 |  |  | $ | 160 |
Net income taxes paid to (refunded from) taxing authorities | 4 |  |  | (128 | )
Non-cash investing and financing activities: |  |  |
Contribution of assets to joint venture(a) | 328 |  |  | — |
(a) | MarkWest’s contribution of assets to Sherwood Midstream and Sherwood Midstream Holdings. See Note 4.
Reconciliation of Additions to Property, Plant and Equipment to Total Capital Expenditures | The consolidated statements of cash flows exclude changes to the consolidated balance sheets that did not affect cash. The following is a reconciliation of additions to property, plant and equipment to total capital expenditures:
| Three Months Ended March 31,
(In millions) | 2017 |  | 2016
Additions to property, plant and equipment per consolidated statements of cash flows | $ | 610 |  |  | $ | 745 |
Asset retirement expenditures | 1 |  |  | — |
Decrease in capital accruals | (72 | ) |  | (137 | )
Total capital expenditures before acquisitions | 539 |  |  | 608 |
Acquisitions(a) | 220 |  |  | (133 | )
Total capital expenditures | $ | 759 |  |  | $ | 475 |
(a) | The three months ended March 31, 2017 reflects the acquisition of the Ozark pipeline. The three months ended March 31, 2016 reflects adjustments to the fair values of the property, plant and equipment, intangibles and goodwill acquired in connection with the MarkWest Merger.

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