MATERIAL ACCOUNTING POLICIES - Property, Plant and Equipment Useful Lives (Details)	12 Months Ended
	Dec. 31, 2025
Minimum \| Buildings
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	15 years
Minimum \| Support Capital and Leasehold Improvement
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	3 years
Minimum \| Network
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	2 years
Minimum \| Customer premises equipment ('CPE')
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	4 years
Maximum \| Buildings
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	33 years
Maximum \| Support Capital and Leasehold Improvement
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	15 years
Maximum \| Network
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	33 years
Maximum \| Customer premises equipment ('CPE')
Disclosure of detailed information about property, plant and equipment [line items]
Useful lives	5 years