Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 02, 2020
Document and Entity Information [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
Document Transition Report	false
Entity Registrant Name	Terminix Global Holdings, Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	20-8738320
Entity Address, Address Line One	150 Peabody Place
Entity Address, City or Town	Memphis
Entity Address, State or Province	TN
Entity Address, Postal Zip Code	38103
City Area Code	901
Local Phone Number	597-1400
Entity Information, Former Legal or Registered Name	ServiceMaster Global Holdings, Inc.
Security 12b Title	Common, par value $0.01
Trading Symbol	TMX
Security Exchange Name	NYSE
Entity Interactive Data Current	Yes
Entity Current Reporting Status	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		132,107,419
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity File Number	001-36507
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Entity Central Index Key	0001428875