Debt (Tables)

9 Months Ended

Sep. 30, 2018

Debt Disclosure [Abstract]

Revolving credit facilities

The following table summarizes the terms of the revolving credit agreements as of September 30, 2018:

	TDS		U.S. Cellular
(Dollars in millions)
Maximum borrowing capacity	$	400	$	300
Letters of credit outstanding	$	1	$	2
Amount borrowed	$	—	$	—
Amount available for use	$	399	$	298