Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2011

Supplemental Cash Flow Information (Tables) [Abstract]

Changes in Assets and Liabilities for supplementary cash and non-cash information

	Six Months Ended
	June 30
(in Millions)	2011			2010
Changes in Assets and Liabilities, Exclusive of Changes Shown Separately
Accounts receivable, net	$	65		$	260
Inventories		(23	)		(34	)
Accrued/prepaid pensions		(187	)		(99	)
Accounts payable		27			7
Income taxes receivable/payable		242			40
Derivative assets and liabilities		(20	)		(62	)
Gas inventory equalization		109			68
Postretirement obligation		(55	)		17
Other assets		202			98
Other liabilities		(94	)		(38	)
	$	266		$	257
Noncash financing activities:
Common stock issued for employee benefit plans	$	1		$	136