Supplemental Cash Flow Information (Tables)

6 Months Ended

Jun. 30, 2012

Supplemental Cash Flow Elements [Abstract]

Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]

	Six Months Ended
	June 30
	2012			2011
Changes in Assets and Liabilities, Exclusive of Changes Shown Separately
Accounts receivable, net	$	120		$	65
Inventories	81			(23		)
Accrued pensions	6			(187		)
Accounts payable	(4		)	27
Income taxes payable/receivable	(39		)	242
Derivative assets and liabilities	26			(20		)
Gas inventory equalization	65			109
Postretirement obligation	(142		)	(55		)
Other assets	299			202
Other liabilities	(112		)	(94		)
	$	300		$	266

Schedule of Other Significant Noncash Transactions [Table Text Block]

Noncash financing activities:
Common stock issued for employee benefit plans	$	80	$	1