CONDENSED CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019
Revenues from contracts with customers	$ 687.8	$ 739.2	$ 1,600.2		$ 1,717.7
Other revenues	14.3	16.2	36.7		41.4
Operating revenues	702.1	755.4	1,636.9		1,759.1
COST OF SALES	209.1	234.0	481.5		625.3
OPERATING EXPENSES
Other operation and maintenance	109.7	129.8	347.2		368.6
Depreciation and amortization	100.5	94.1	292.2		260.8
Taxes other than income	24.8	23.2	76.3		70.4
Operating expenses	235.0	247.1	715.7		699.8
OPERATING INCOME	258.0	274.3	439.7		434.0
OTHER INCOME (EXPENSE)
Equity in earnings (losses) of unconsolidated affiliates	15.8	38.3	(703.8)	[1]	104.8
Allowance for equity funds used during construction	1.1	1.0	3.7		3.7
Other net periodic benefit expense	(2.0)	(1.4)	(3.5)		(8.7)
Other income	5.5	4.6	27.0		16.3
Other expense	(5.4)	(5.5)	(23.9)		(15.6)
Net other income (expense)	15.0	37.0	(700.5)		100.5
INTEREST EXPENSE
Interest on long-term debt	38.7	37.5	114.1		101.9
Allowance for borrowed funds used during construction	(0.5)	(0.6)	(1.5)		(2.2)
Interest on short-term debt and other interest charges	1.6	2.7	6.3		10.4
Interest expense	39.8	39.6	118.9		110.1
INCOME (LOSS) BEFORE TAXES	233.2	271.7	(379.7)		424.4
INCOME TAX EXPENSE (BENEFIT)	55.8	20.8	(151.2)		26.2
NET INCOME (LOSS)	$ 177.4	$ 250.9	$ (228.5)		$ 398.2
BASIC AVERAGE COMMON SHARES OUTSTANDING	200.1	200.2	200.1		200.1
DILUTED AVERAGE COMMON SHARES OUTSTANDING	200.4	200.8	200.1		200.6
BASIC EARNINGS (LOSS) PER AVERAGE COMMON SHARE	$ 0.89	$ 1.25	$ (1.14)		$ 1.99
DILUTED EARNINGS (LOSS) PER AVERAGE COMMON SHARE	$ 0.89	$ 1.25	$ (1.14)		$ 1.98

[1] In March 2020, the Company recorded a $780.0 million impairment on its investment in Enable, as further discussed in Notes 4 and 5.