Schedule I - Condensed Financial Information Of Parent (Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
ASSETS
Cash and cash equivalents	$ 5	$ 30	$ 184
Miscellaneous accounts and notes receivable	81us-gaap_OtherReceivablesNetCurrent	196us-gaap_OtherReceivablesNetCurrent
Current accumulated deferred income taxes, net	352us-gaap_DeferredTaxAssetsNetCurrent	106us-gaap_DeferredTaxAssetsNetCurrent
Other current assets	86us-gaap_OtherAssetsCurrent	85us-gaap_OtherAssetsCurrent
Total current assets	2,046us-gaap_AssetsCurrent	1,972us-gaap_AssetsCurrent
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	13us-gaap_DeferredTaxAssetsNetNoncurrent	15us-gaap_DeferredTaxAssetsNetNoncurrent
Other non-current assets	664us-gaap_OtherAssetsNoncurrent	720us-gaap_OtherAssetsNoncurrent
TOTAL ASSETS	22,676us-gaap_Assets	21,042us-gaap_Assets
LIABILITIES AND EQUITY
Current maturities of long-term debt	120us-gaap_LongTermDebtCurrent	534us-gaap_LongTermDebtCurrent
Short-term debt	714us-gaap_ShortTermBorrowings	368us-gaap_ShortTermBorrowings
Accounts Payable and Accrued Liabilities, Current	711	806
Other current liabilities	434us-gaap_OtherLiabilitiesCurrent	351us-gaap_OtherLiabilitiesCurrent
Total current liabilities	2,249us-gaap_LiabilitiesCurrent	2,461us-gaap_LiabilitiesCurrent
Other deferred credits and liabilities	514us-gaap_OtherLiabilitiesNoncurrent	538us-gaap_OtherLiabilitiesNoncurrent
Commitments and Contingencies
Retained earnings	1,103	907
Accumulated other comprehensive income (loss)	(9)	3
Total equity	6,855	6,686	6,767
TOTAL LIABILITIES AND EQUITY	22,676	21,042
Parent Company
ASSETS
Cash and cash equivalents	1	11	23	3
Advances to money pool	55	334
Accounts receivable - affiliates	28	18
Notes Receivable, Related Parties, Current	94	9
Miscellaneous accounts and notes receivable	39	125
Current accumulated deferred income taxes, net	143	41
Other current assets	14	1
Total current assets	374	539
Investments in subsidiaries - continuing operations	6,680	6,336
Investments in subsidiaries - discontinued operations	(4)	(5)
Note receivable - affiliates	100	51
Deferred Tax Assets, Net of Valuation Allowance, Noncurrent	264	570
Other non-current assets	152	141
TOTAL ASSETS	7,566	7,632
LIABILITIES AND EQUITY
Current maturities of long-term debt	0	425
Short-term debt	585	368
Accounts Payable and Accrued Liabilities, Current	0	119
Accounts payable – affiliates	88	4
Other current liabilities	52	20
Total current liabilities	725	936
Other deferred credits and liabilities	128	152
Total liabilities	853	1,088
Common stock, $.01 par value, 400.0 shares authorized – shares outstanding of 242.6	2	2
Other paid-in capital, principally premium on common stock	5,617	5,632
Retained earnings	1,103	907
Accumulated other comprehensive income (loss)	(9)	3
Total equity	6,713	6,544
TOTAL LIABILITIES AND EQUITY	$ 7,566	$ 7,632

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee for discontinued operations. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

No definition available.