The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 13
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-13

Name:	us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Rate And Regulatory Matters (Narrative-Federal) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended	9 Months Ended
	Oct. 31, 2024	May 31, 2020	Mar. 31, 2028	Sep. 30, 2026	Sep. 30, 2025
Rate And Regulatory Matters [Line Items]
Capital expenditures				$ 4,089	$ 3,118
Forecast
Rate And Regulatory Matters [Line Items]
Capital expenditures			$ 1,200
Midwest Independent Transmission System Operator, Inc \| Final Rate Order
Rate And Regulatory Matters [Line Items]
Approved return on equity percentage	9.98%	10.02%