Contingencies and Commitments (Tables)

3 Months Ended

Mar. 31, 2016

Commitments and Contingencies Disclosure [Abstract]

Gathering, Processing and Transportation Commitments

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

	March 31, 2016
	($ in millions)
2016	$	1,383
2017	1,880
2018	1,676
2019	1,378
2020	1,051
2021 – 2099	6,696
Total	$	14,064