CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Operating Activities
Net income	$ 656.2	$ 621.7
Reconciliation to cash provided by operating activities
Depreciation and amortization	456.3	415.3
Deferred income taxes and investment tax credits, net	96.1	31.7
Contributions and payments related to pension and OPEB plans	(8.3)	(9.7)
Equity income in transmission affiliates, net of distributions	(9.4)	4.9
Change in –
Accounts receivable and unbilled revenues	267.9	235.5
Materials, supplies, and inventories	87.0	72.6
Other current assets	20.0	78.8
Accounts payable	(222.7)	(85.0)
Other current liabilities	(55.1)	0.1
Other, net	3.2	147.5
Net cash provided by operating activities	1,291.2	1,513.4
Investing Activities
Capital expenditures	(855.2)	(915.5)
Acquisition of Upstream, net of cash and restricted cash acquired of $9.2	(268.2)	0.0
Acquisition of Forward Wind Energy Center	0.0	(77.1)
Capital contributions to transmission affiliates	(21.9)	(32.4)
Proceeds from the sale of assets and businesses	30.0	7.9
Proceeds from the sale of investments held in rabbi trust	0.1	16.5
Reimbursement for ATC's construction costs	32.4	0.0
Other, net	16.4	3.8
Net cash used in investing activities	(1,066.4)	(996.8)
Financing Activities
Exercise of stock options	50.1	5.1
Purchase of common stock	(106.3)	(19.8)
Dividends paid on common stock	(372.3)	(348.7)
Issuance of long-term debt	350.0	600.0
Retirement of long-term debt	(17.3)	(681.4)
Change in short-term debt	(177.4)	(74.6)
Other, net	(7.0)	(3.8)
Net cash used in financing activities	(280.2)	(523.2)
Net change in cash, cash equivalents, and restricted cash	(55.4)	(6.6)
Cash, cash equivalents, and restricted cash at beginning of period	146.1	58.6
Cash, cash equivalents, and restricted cash at end of period	$ 90.7	$ 52.0