Contingencies and Commitments (Tables)

3 Months Ended

Mar. 31, 2015

Commitments and Contingencies Disclosure [Abstract]

Gathering, Processing and Transportation Commitments [Table Text Block]

The aggregate undiscounted commitments under our gathering, processing and transportation agreements, excluding any reimbursement from working interest and royalty interest owners or credits for third-party volumes, are presented below.

	March 31, 2015
	($ in millions)
2015	$	1,359
2016	1,926
2017	1,932
2018	1,713
2019	1,428
2020 – 2099	6,173
Total	$	14,531