CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities
Net income	$ 694.7	$ 656.2
Reconciliation to cash provided by operating activities
Depreciation and amortization	481.6	456.3
Deferred income taxes and investment tax credits, net	143.5	96.1
Contributions and payments related to pension and OPEB plans	(6.6)	(8.3)
Equity income in transmission affiliates, net of distributions	(20.1)	(9.4)
Change in –
Accounts receivable and unbilled revenues	215.4	267.9
Materials, supplies, and inventories	82.1	87.0
Other current assets	62.5	20.0
Accounts payable	(188.3)	(222.7)
Other current liabilities	(67.2)	(55.1)
Other, net	(18.0)	3.2
Net cash provided by operating activities	1,379.6	1,291.2
Investing activities
Capital expenditures	(1,037.2)	(855.2)
Acquisition of Upstream, net of cash and restricted cash acquired of $9.2	0.0	(268.2)
Capital contributions to transmission affiliates	(9.0)	(21.9)
Proceeds from the sale of assets and businesses	2.1	30.0
Proceeds from the sale of investments held in rabbi trust	17.1	0.1
Reimbursement for ATC's construction costs	0.0	32.4
Proceeds from cash surrender value of life insurance	8.3	8.8
Other, net	12.5	7.6
Net cash used in investing activities	(1,006.2)	(1,066.4)
Financing activities
Exercise of stock options	20.3	50.1
Purchase of common stock	(50.3)	(106.3)
Dividends paid on common stock	(399.0)	(372.3)
Issuance of long-term debt	110.0	350.0
Retirement of long-term debt	(418.2)	(17.3)
Issuance of short-term loan	340.0	0.0
Change in other short-term debt	40.7	(177.4)
Purchase of additional ownership interest in Upstream from noncontrolling interest	(31.0)	0.0
Other, net	(5.8)	(7.0)
Net cash used in financing activities	(393.3)	(280.2)
Net change in cash, cash equivalents, and restricted cash	(19.9)	(55.4)
Cash, cash equivalents, and restricted cash at beginning of period	82.3	146.1
Cash, cash equivalents, and restricted cash at end of period	$ 62.4	$ 90.7