Property, Plant, And Equipment (Property, Plant And Equipment, Net) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 13,186	$ 9,707
Less: Accumulated depreciation	(1,336)	(508)
Property, plant and equipment, net	11,850	9,199
Land [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	244	251
Buildings and Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,212	1,195
Estimated useful lives	40 years
General Support [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 290	212
General Support [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	15 years
General Support [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Central Office Electronic Circuit Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,807	1,266
Central Office Electronic Circuit Equipment [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	8 years
Central Office Electronic Circuit Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	5 years
Poles [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 797	677
Estimated useful lives	30 years
Cable, Fiber and Wire [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 5,756	4,101
Cable, Fiber and Wire [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	25 years
Cable, Fiber and Wire [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives	15 years
Conduit [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,404	1,374
Estimated useful lives	50 years
Materials And Supplies [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 546	139
Construction Work In Progress [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,130	$ 492