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Debt - Export Credit Financing Agreement (Details) - TDS export credit financing agreement
$ in Millions
6 Months Ended
Jun. 30, 2023
USD ($)
Debt Instrument [Line Items]  
Maximum borrowing capacity $ 150
Amount borrowed during the period 100
Amount borrowed and outstanding $ 150
SOFR rate  
Debt Instrument [Line Items]  
Contractual spread 1.60%