Contingencies and Commitments (Tables)

6 Months Ended

Jun. 30, 2013

Text Block [Abstract]

Contractual Obligation, Fiscal Year Maturity Schedule

The aggregate undiscounted commitments under our gathering, processing and transportation agreements, excluding any reimbursement from working interest and royalty interest owners, are presented below.

	June 30, 2013
	($ in millions)
2013	$	902
2014	2,001
2015	1,820
2016	1,914
2017	1,947
2018 - 2099	9,477
Total	$	18,061