Schedule I - Condensed Financial Information Of Parent (Balance Sheet) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
ASSETS
Cash and cash equivalents	$ 30	$ 184	$ 248
Accounts and notes receivable - affiliates	404	354
Miscellaneous accounts and notes receivable	196	71
Other current assets	85	98
Total current assets	1,972	3,596
Current accumulated deferred income taxes, net	106	170
Other non-current assets	698	667
TOTAL ASSETS	21,042	22,230
LIABILITIES AND EQUITY
Current maturities of long-term debt	534	355
Short-term debt	368
Accounts Payable and Accrued Liabilities, Current	806	533
Other current liabilities	194	168
Total current liabilities	2,461	2,686
Long-term debt	5,504	5,802
Other deferred credits and liabilities	622	643
Commitments and Contingencies
Retained earnings	907	1,006
Accumulated other comprehensive income (loss)	3	(8)
Total equity	6,686	6,767	8,068
TOTAL LIABILITIES AND EQUITY	21,042	22,230
Parent Company
ASSETS
Cash and cash equivalents	11	23	3	4
Advances to money pool	334	316
Accounts and notes receivable - affiliates	27	31
Miscellaneous accounts and notes receivable	125
Other current assets	42	49
Total current assets	539	419
Investments in subsidiaries - continuing operations	6,336	6,315
Investments in subsidiaries - discontinued operations	(5)	(353)
Note receivable - affiliates	51	462
Current accumulated deferred income taxes, net	623	210
Other non-current assets	141	110
TOTAL ASSETS	7,685	7,163
LIABILITIES AND EQUITY
Current maturities of long-term debt	425
Short-term debt	368
Accounts Payable and Accrued Liabilities, Current	119	3
Accounts payable – affiliates	4	10
Other current liabilities	20	30
Total current liabilities	936	43
Long-term debt		424
Other deferred credits and liabilities	205	80
Total liabilities	1,141	547
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	5,632	5,616
Retained earnings	907	1,006
Accumulated other comprehensive income (loss)	3	(8)
Total equity	6,544	6,616
TOTAL LIABILITIES AND EQUITY	$ 7,685	$ 7,163