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Cover Cover
Nov. 19, 2020
Nov. 18, 2020
Cover [Abstract]    
Entity File Number   001-36373
Entity Tax Identification Number   95-3359658
Entity Address, Postal Zip Code   94568
City Area Code   510
Local Phone Number   352-5000
Document Type   8-K
Document Period End Date   Nov. 18, 2020
Entity Registrant Name   TRINET GROUP, INC.
Entity Emerging Growth Company   false
Title of 12(b) Security   Common stock par value $0.000025 per share
Pre-commencement Issuer Tender Offer false  
Pre-commencement Tender Offer false  
Written Communications   false
Soliciting Material false  
Entity Incorporation, State or Country Code   DE
Trading Symbol   TNET
Security Exchange Name   NYSE
Entity Address, Address Line One   One Park Place, Suite 600
Entity Address, City or Town   Dublin,
Entity Address, State or Province   CA