CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024
Current assets
Cash and cash equivalents	$ 23.0	$ 9.8
Accounts receivable and unbilled revenues, net of reserves of $142.2 and $162.8, respectively	1,496.4	1,669.3
Materials, supplies, and inventories	703.0	813.2
Prepaid taxes	209.0	214.9
Other prepayments	51.4	82.6
Other	116.3	121.9
Current assets	2,599.1	2,911.7
Long-term assets
Property, plant, and equipment, net of accumulated depreciation and amortization of $12,025.9 and $11,611.9, respectively	36,060.8	34,645.4
Regulatory assets (June 30, 2025 and December 31, 2024 include $72.2 and $76.5, respectively, related to WEPCo Environmental Trust)	3,231.8	3,339.7
Equity investment in transmission affiliates	2,200.1	2,108.9
Goodwill	3,052.8	3,052.8
Pension and OPEB assets	1,000.4	968.5
Other	379.3	336.2
Long-term assets	45,925.2	44,451.5
Total assets	48,524.3	47,363.2
Current liabilities
Short-term debt	810.3	1,116.6
Current portion of long-term debt (June 30, 2025 and December 31, 2024 include $9.2, related to WEPCo Environmental Trust)	2,250.4	1,729.0
Accounts payable	816.5	1,137.1
Other	820.4	859.2
Current liabilities	4,697.6	4,841.9
Long-term liabilities
Long-term debt (June 30, 2025 and December 31, 2024 include $71.9 and $76.4, respectively, related to WEPCo Environmental Trust)	17,110.4	17,178.1
Long-term lease liabilities	361.8	303.3
Deferred income taxes	5,739.5	5,514.7
Deferred revenue, net	323.9	334.6
Regulatory liabilities	4,039.0	3,958.0
Intangible liabilities	609.7	566.8
Environmental remediation liabilities	438.9	445.8
AROs	616.4	580.0
Other	917.0	838.1
Long-term liabilities	30,156.6	29,719.4
Commitments and contingencies (Note 21)
Common shareholders' equity
Common stock – $0.01 par value; 650,000,000 shares authorized; 321,866,395 and $317,680,855 shares outstanding, respectively	3.2	3.2
Additional paid in capital	4,743.1	4,315.8
Retained earnings	8,484.7	8,083.8
Accumulated other comprehensive loss	(7.9)	(7.8)
Common shareholders' equity	13,223.1	12,395.0
Preferred stock of subsidiary	30.4	30.4
Noncontrolling interests	416.6	376.5
Total liabilities and equity	$ 48,524.3	$ 47,363.2

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481990/310-10-45-2