Commitments and Contingencies Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2015

Commitments and Contingencies (Minimum Future Payments) [Abstract]

Contractual Obligation, Fiscal Year Maturity Schedule

The Partnership executed transportation and terminalling agreements that obligate us to minimum volume, throughput or payment commitments over the terms of the agreements, which range from three to ten years. After the minimum volume commitments are met in the transportation and terminalling agreements, the Partnership pays additional amounts based on throughput. There are escalation clauses in the transportation and terminalling agreements, which are based on CPI adjustments. The minimum future payments under these agreements as of December 31, 2015 are as follows:

(In millions)
2016	$	68
2017	74
2018	60
2019	59
2020	59
2021 and thereafter	299
Total	$	619

Schedule Of Future Minimum Lease Payments For Operating And Capital Leases Table

The Partnership has various non-cancellable operating lease agreements and a long-term propane storage agreement expiring at various times through fiscal year 2040. Most of these leases include renewal options. The Partnership also leases certain pipelines under a capital lease that has a fixed price purchase option in 2020. Future minimum commitments as of December 31, 2015, for capital lease obligations and for operating lease obligations having initial or remaining non-cancellable lease terms in excess of one year are as follows:

(In millions)	Capital Lease Obligations		Operating Lease Obligations
2016	$	1	$	53
2017	1		51
2018	2		41
2019	2		36
2020	5		30
Later years	—		106
Total minimum lease payments	11		$	317
Less imputed interest costs	2
Present value of net minimum lease payments	$	9

Schedule of Rent Expense

Operating lease rental expense was:

(In millions)	2015		2014		2013
Minimum rental expense	$	21	$	17	$	17

Schedule of minimum amounts payable annually under the product supply agreement

SMR Transaction – On September 1, 2009, MarkWest entered into a product supply agreement creating a long-term contractual obligation for the payment of processing fees in exchange for the entire product processed by the SMR. The product received under this agreement is sold to a refinery customer pursuant to a corresponding long-term agreement. The minimum amounts payable annually under the product supply agreement, excluding the potential impact of inflation adjustments per the agreement, are as follows:

(In millions)
2016	$	17
2017	17
2018	17
2019	17
2020	17
2021 and thereafter	162
Total minimum payments	247
Less: Services element	95
Less: Interest	52
Total SMR liability	100
Less: Current portion of SMR liability	4
Long-term portion of SMR liability	$	96