XML 32 R1.htm IDEA: XBRL DOCUMENT v3.19.1
Document And Entity Information
 3 Months Ended
Mar. 31, 2019
shares
Entity Registrant Name TELEPHONE & DATA SYSTEMS INC /DE/
Entity Central Index Key 0001051512
Document Type 10-Q
Document Period End Date Mar. 31, 2019
Amendment Flag false
Current Fiscal Year End Date --12-31
Entity Filer Category Large Accelerated Filer
Emerging Growth Company false
Smaller Reporting Company false
Document Fiscal Year Focus 2019
Document Fiscal Period Focus Q1
Trading Symbol TDS
Common Shares  
Entity Common Stock, Shares Outstanding 106,775,800
Series A Common Shares  
Entity Common Stock, Shares Outstanding 7,286,300