Consolidated Balance Sheet (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current assets:
Cash and cash equivalents	$ 839	$ 889
Accounts and notes receivable (net of allowance of $0 at December 31, 2012 and $1 at December 31, 2011)	688	637
Deferred income tax asset	117	52
Inventories	175	169
Regulatory assets	39	40
Other current assets and deferred charges	66	107
Total current assets	1,924	1,894
Investments	3,987	1,391
Property, plant and equipment - net	15,467	12,580
Goodwill	649	0
Other intangibles	1,704	44
Regulatory assets, deferred charges, and other	596	593
Total assets	24,327	16,502
Current liabilities:
Accounts payable	920	691
Accrued liabilities	628	631
Long-term debt due within one year	1	353
Total current liabilities	1,549	1,675
Long-term debt	10,735	8,369
Deferred income taxes	2,841	2,157
Other noncurrent liabilities	1,775	1,715
Contingent liabilities and commitments (Note 17)
Stockholders' equity:
Common stock (960 million shares authorized at $1 par value; 716 million shares issued at December 31, 2012, and 626 million shares issued at December 31, 2011)	716	626
Capital in excess of par value	11,134	7,920
Retained deficit	(5,695)	(5,820)
Accumulated other comprehensive income (loss)	(362)	(389)
Treasury stock, at cost (35 million shares of common stock)	(1,041)	(1,041)
Total stockholders' equity	4,752	1,296
Noncontrolling interests in consolidated subsidiaries	2,675	1,290
Total equity	7,427	2,586
Total liabilities and equity	$ 24,327	$ 16,502