Consolidated Balance Sheets Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 172	$ 53
Accounts receivable, net	603	700
Inventories:
Materials and supplies	215	213
Fuel	227	241
Deferred income taxes	41	66
Regulatory assets	111	94
Other current assets	76	75
Total current assets	1,445	1,442
Property, plant and equipment, net	18,566	18,507
Regulatory assets	1,268	1,290
Other assets	435	420
Total assets	21,714	21,659
Current liabilities:
Accounts payable	438	504
Income taxes payable	37	22
Accrued employee expenses	106	79
Accrued interest	99	110
Accrued property and other taxes	83	58
Current portion of long-term debt and capital lease obligations	226	238
Regulatory liabilities	50	55
Other current liabilities	188	208
Total current liabilities	1,227	1,274
Regulatory liabilities	895	879
Long-term debt and capital lease obligations	7,051	6,639
Deferred income taxes	4,370	4,359
Other long-term liabilities	729	721
Total liabilities	14,272	13,872
Commitments and contingencies (Note 8)
Shareholders' equity:
Preferred stock	2	2
Common stock - 750 shares authorized, no par value, 357 shares issued and outstanding	0	0
Additional paid-in capital	4,479	4,479
Retained earnings	2,970	3,315
Accumulated other comprehensive loss, net	(9)	(9)
Total shareholders' equity	7,442	7,787
Total liabilities and shareholders' equity	$ 21,714	$ 21,659