Consolidated Balance Sheets (MPLX Parenthetical) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Cash and cash equivalents	$ 308	$ 1,127
Receivables, less allowance for doubtful accounts	2,602	2,927
Inventories	4,983	5,225
Other current assets	204	192
Other current assets	8,097	9,471
Equity method investments	3,807	3,622
Property, plant and equipment, net	25,319	25,164
Goodwill	3,649	4,019
Other noncurrent assets	886	839
Accounts payable	4,083	4,743
Payroll and benefits payable	302	503
Consumer excise taxes payable	459	460
Accrued taxes	145	184
Long-term debt due within one year	215	29
Other current liabilities	391	426
Total long-term debt due after one year	11,351	11,896
Deferred income taxes	3,356	3,285
Defined benefit postretirement plan obligations	1,216	1,179
Deferred credits and other liabilities	746	735
MPLX LP
Cash and cash equivalents	4	43
Receivables, less allowance for doubtful accounts	256	257
Inventories	45	51
Other current assets	28	50
Equity method investments	2,598	2,458
Property, plant and equipment, net	10,195	9,997
Goodwill	2,200	2,570
Other noncurrent assets	531	478
Accounts payable	424	449
Payroll and benefits payable	1	18
Consumer excise taxes payable	1	1
Accrued taxes	23	26
Long-term debt due within one year	1	1
Other current liabilities	69	65
Total long-term debt due after one year	4,715	5,255
Deferred income taxes	382	378
Defined benefit postretirement plan obligations	0	0
Deferred credits and other liabilities	$ 172	$ 170