Common Share Repurchases (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Share repurchases
Amount	$ 8,598	$ 18,425
Treasury Shares
Share repurchases
Amount	8,598	18,425
Common Shares | Treasury Shares
Share repurchases
Number of shares acquired	212,000	496,000
Average cost per share	$ 40.49	$ 37.16
Amount	$ 8,598	$ 18,425
Common share repurchase authorization	On November 17, 2009, the Board of Directors of U.S. Cellular authorized the repurchase of up to 1,300,000 Common Shares on an annual basis beginning in 2009 and continuing each year thereafter, on a cumulative basis. These purchases will be made pursuant to open market purchases, block purchases, private purchases or otherwise, depending on market conditions. This authorization does not have an expiration date.
Repurchase authorization, additional number of shares	1,300,000
Repurchase expiration	does not have an expiration date