XML 16 R1.htm IDEA: XBRL DOCUMENT v3.19.2
Document and Entity Information Document - $ / shares
 6 Months Ended
Jun. 30, 2019
Aug. 05, 2019
Dec. 31, 2018
Entity [Abstract]      
Document Quarterly Report true    
Document Transition Report false    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Entity Tax Identification Number 47-4116383    
Entity Incorporation, State or Country Code DE    
Common Stock, Par or Stated Value Per Share $ 0.01   $ 0.01
Trading Symbol ADT    
Entity Registrant Name ADT Inc.    
Entity Address, Address Line One 1501 Yamato Road    
Entity Address, City or Town Boca Raton    
Entity Address, State or Province FL    
Entity Address, Postal Zip Code 33431    
City Area Code 561    
Local Phone Number 988-3600    
Entity Interactive Data Current Yes    
Entity Central Index Key 0001703056    
Current Fiscal Year End Date --12-31    
Entity Filer Category Non-accelerated Filer    
Document Type 10-Q    
Document Period End Date Jun. 30, 2019    
Entity File Number 001-38352    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus Q2    
Amendment Flag false    
Entity Common Stock, Shares Outstanding   739,891,705  
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company true    
Entity Current Reporting Status Yes    
Security Exchange Name NYSE