Debt - Export Credit Financing Agreements (Details) $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
TDS export credit financing agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 150
Amount borrowed during the period	100
Amounts borrowed and outstanding	150
UScellular export credit financing agreement
Debt Instrument [Line Items]
Maximum borrowing capacity	150
Amounts borrowed and outstanding	$ 150
SOFR Rate | TDS export credit financing agreement
Debt Instrument [Line Items]
Contractual spread	1.60%
SOFR Rate | UScellular export credit financing agreement
Debt Instrument [Line Items]
Contractual spread	1.60%