Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 830
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147481674/830-30-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

Name:	us-gaap_SubsequentEventLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Subsequent Events (Details) circuitMile in Thousands, home in Millions, $ in Millions		12 Months Ended
	Jun. 26, 2024 USD ($) home people circuitMile	Mar. 31, 2024 county	Mar. 31, 2023 county
Subsequent Event [Line Items]
Broadband licenses granted, number of counties \| county		28	84
Subsequent Event \| Oncor Electric Delivery Company LLC \| Wireless Licenses
Subsequent Event [Line Items]
Broadband licenses granted, estimated consideration \| $	$ 102.5
Broadband licenses granted, number of counties	95
Number of transmission and distribution lines \| circuitMile	143
Number of homes served \| home	4
Population served	13,000,000