Contingencies and Commitments (Tables)

9 Months Ended

Sep. 30, 2013

Text Block [Abstract]

Contractual Obligation, Fiscal Year Maturity Schedule [Table Text Block]

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

	September 30, 2013
	($ in millions)
2013	$	510
2014	2,010
2015	1,821
2016	1,910
2017	1,942
2018 - 2099	9,546
Total	$	17,739