Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
ASSETS
Property, plant and equipment	$ 20,189	$ 19,954
Accumulated depreciation	(5,061)	(4,962)
Property, plant and equipment, net	15,128	14,992
Current assets:
Cash and cash equivalents	78	75
Restricted funds	23	20
Accounts receivable, net	250	269
Unbilled revenues	227	263
Materials and supplies	41	39
Other	148	118
Total current assets	767	784
Regulatory and other long-term assets:
Regulatory assets	1,298	1,289
Goodwill	1,345	1,345
Other	72	72
Total regulatory and other long-term assets	2,715	2,706
TOTAL ASSETS	18,610	18,482
Capitalization:
Common stock ($0.01 par value, 500,000,000 shares authorized, 182,231,713 and 181,798,555 shares issued, respectively)	2	2
Paid-in-capital	6,400	6,388
Accumulated deficit	(759)	(873)
Accumulated other comprehensive loss	(82)	(86)
Treasury stock, at cost (4,502,221 and 3,701,867 shares, respectively)	(274)	(213)
Total common stockholders' equity	5,287	5,218
Long-term debt	5,744	5,749
Redeemable preferred stock at redemption value	9	10
Total long-term debt	5,753	5,759
Total capitalization	11,040	10,977
Current liabilities:
Short-term debt	980	849
Current portion of long-term debt	574	574
Accounts payable	108	154
Accrued liabilities	453	609
Taxes accrued	67	31
Interest accrued	101	63
Other	135	112
Total current liabilities	2,418	2,392
Regulatory and other long-term liabilities:
Advances for construction	297	300
Deferred income taxes, net	2,629	2,596
Deferred investment tax credits	23	23
Regulatory liabilities	404	403
Accrued pension expense	420	419
Accrued postretirement benefit expense	86	87
Other	68	67
Total regulatory and other long-term liabilities	3,927	3,895
Contributions in aid of construction	1,225	1,218
Commitments and contingencies (see Note 8)
TOTAL CAPITALIZATION AND LIABILITIES	$ 18,610	$ 18,482