Supplemental Cash Flow Information (Tables)

12 Months Ended

Dec. 31, 2018

Supplemental Cash Flow Information [Abstract]

Summary of Supplemental Cash Flow Information

(In millions)	2018		2017		2016
Net cash provided by operating activities included:
Interest paid (net of amounts capitalized)	$	887	$	525	$	478
Net income taxes paid to taxing authorities	424		904		140
Non-cash investing and financing activities:
Capital leases	$	172	$	71	$	—
Contribution of assets to joint venture(a)	—		337		273
Intangible asset acquired	—		45		—
Acquisition:
Fair value of MPC shares issued	19,766		—		—
Fair value of converted equity awards	203		—		—

^(a)  2017 includes MPLX’s contribution of assets to Sherwood Midstream and Sherwood Midstream Holdings.2016 includesSpeedway’s contribution of travel plaza locations to new joint venture with Pilot Flying J. See Note 5.

(In millions)	December 31, 2018		December 31, 2017
Cash and cash equivalents	$	1,687	$	3,011
Restricted cash(a)	38		4
Cash, cash equivalents and restricted cash(b)	$	1,725	$	3,015

Schedule of Cash and Cash Equivalents [Table Text Block]

(In millions)	December 31, 2018		December 31, 2017
Cash and cash equivalents	$	1,687	$	3,011
Restricted cash(a)	38		4
Cash, cash equivalents and restricted cash(b)	$	1,725	$	3,015

^(a)  The restricted cash balance is included within other current assets on the consolidated balance sheets.

^(b)  As a result of the adoption of ASU 2016-18, the consolidated statements of cash flows now explain the change during the period of both cash and cash equivalents and restricted cash.

Schedule Of 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:

(In millions)	2018		2017		2016
Additions to property, plant and equipment per the consolidated statements of cash flows	$	3,578	$	2,732	$	2,892
Asset retirement expenditures(a)	8		2		6
Increase (decrease) in capital accruals	309		67		(127		)
Total capital expenditures	$	3,895	$	2,801	$	2,771

^(a)  Included in All other, net – Operating activities on the consolidated statements of cash flows.