Investments (Tables)

6 Months Ended

Jun. 30, 2012

Schedule Of Investments

At June 30, 2012 and December 31, 2011, we had the following investments:

			Carrying Value
	Approximate Ownership %	Accounting Method	June 30,     2012		December 31, 2011
			($ in millions)
Chesapeake Midstream Partners, L.P.	—	Equity	$	—	$	987
FTS International, Inc.	30%	Equity		203		235
Chaparral Energy, Inc.	20%	Equity		137		143
Sundrop Fuels, Inc.	37%	Equity		63		34
Clean Energy Fuels Corp.	—	Cost		50		50
Twin Eagle Resource Management, LLC	30%	Equity		29		20
Clean Energy Fuels Corp.	1%	Fair Value		16		12
Gastar Exploration Ltd.	10%	Fair Value		13		22
Other	—	—		33		28
Total investments			$	544	$	1,531

Investments Held for Sale

Pursuant to our reclassification of certain assets and liabilities to held for sale, the following investments held by our midstream business have been identified as investments held for sale. See Note 1 for further discussion of these sales.

			Carrying Value
	Approximate Ownership %	Accounting Method	June 30,         2012		December 31, 2011
			($ in millions)
Utica East Ohio Midstream, LLC	59%	Equity	$	51	$	—
Ranch Westex JV, LLC	33%	Equity		18		—
Glass Mountain Pipeline, LLC	50%	Equity		4		—
Total investments held for sale			$	73	$	—