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Debt (Tables)
3 Months Ended
Mar. 31, 2022
Debt Disclosure [Abstract]  
Revolving credit facilities
The following table summarizes the revolving credit agreement as of March 31, 2022:
(Dollars in millions)
Maximum borrowing capacity$300 
Letters of credit outstanding$— 
Amount borrowed$— 
Amount available for use$300 
The following table summarizes the term loan credit agreements as of March 31, 2022:
(Dollars in millions)
Maximum borrowing capacity$800 
Amount borrowed and outstanding$699 
Amount borrowed and repaid$
Amount available for use$100