Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015
Property, plant, and equipment
In service	$ 26,523.3	$ 26,249.5
Accumulated depreciation	(8,005.9)	(7,919.1)
In service, net	18,517.4	18,330.4
Construction work in progress	706.6	822.9
Leased facilities, net	35.0	36.4
Net property, plant, and equipment	19,259.0	19,189.7
Investments
Equity investment in transmission affiliate	1,422.5	1,380.9
Other	87.5	85.8
Total investments	1,510.0	1,466.7
Current assets
Cash and cash equivalents	34.7	49.8
Accounts receivable and unbilled revenues, net of reserves of $114.3 and $113.3, respectively	1,088.1	1,028.6
Materials, supplies, and inventories	470.7	687.0
Assets held for sale	0.0	96.8
Prepayments	243.4	285.8
Other	59.5	58.8
Total current assets	1,896.4	2,206.8
Deferred charges and other assets
Regulatory assets	3,060.8	3,064.6
Goodwill	2,999.1	3,023.5
Other	379.3	403.9
Total deferred charges and other assets	6,439.2	6,492.0
Total assets	29,104.6	29,355.2
Capitalization
Common stock – $.01 par value; 325,000,000 shares authorized; 315,647,207 and 315,683,496 shares outstanding, respectively	3.2	3.2
Additional paid in capital	4,321.1	4,347.2
Retained earnings	4,489.7	4,299.8
Accumulated other comprehensive income	4.3	4.6
Preferred Stock, Value, Issued	30.4	30.4
Long-term debt	8,955.8	9,124.1
Total capitalization	17,804.5	17,809.3
Current liabilities
Current portion of long-term debt	152.4	157.7
Short-term debt	896.4	1,095.0
Accounts payable	584.4	815.4
Accrued payroll and benefits	102.7	169.7
Accrued interest	118.6	67.4
Other	375.3	403.8
Total current liabilities	2,229.8	2,709.0
Deferred credits and other liabilities
Regulatory liabilities	1,411.8	1,392.2
Deferred income taxes	4,856.5	4,622.3
Deferred revenue, net	576.1	579.4
Pension and other postretirement benefit obligations	541.1	543.1
Environmental remediation	617.6	628.2
Other	1,067.2	1,071.7
Total deferred credits and other liabilities	$ 9,070.3	$ 8,836.9
Commitments and contingencies (Note 16)
Total capitalization and liabilities	$ 29,104.6	$ 29,355.2