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Commitments And Contingencies	9 Months Ended
	Sep. 30, 2019
Commitments and Contingencies [Abstract]
Commitments and Contingencies	Note 10 Commitments and Contingencies Purchase Obligations On September 27, 2019, U.S. Cellular executed a new Master Service Agreement, Master Statement of Work for Managed Services and certain other documents with Amdocs Tethys Limited, effective October 1, 2019, to continue using the Billing and Operational Support System (B/OSS) and certain support functions offered by Amdocs Tethys Limited. The committed, non-cancellable amount to be paid to Amdocs Tethys Limited with respect to the new agreements is $241 million over five years.

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Commitments and Contingencies [Abstract]

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The entire disclosure for commitments and contingencies.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-URI http://asc.fasb.org/topic&trid=2127136

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 440
-URI http://asc.fasb.org/topic&trid=2144648

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