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Document And Entity Information
Oct. 29, 2019
Document And Entity Information [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Oct. 29, 2019
Entity Registrant Name Paycom Software, Inc.
Entity Central Index Key 0001590955
Entity Emerging Growth Company false
Entity File Number 001-36393
Entity Incorporation State Country Code DE
Entity Tax Identification Number 80-0957485
Entity Address Address Line1 7501 W. Memorial Road
Entity Address City Or Town Oklahoma City
Entity Address State Or Province OK
Entity Address Postal Zip Code 73142
City Area Code (405)
Local Phone Number 722-6900
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of each class Common Stock, $0.01 par value
Trading Symbol PAYC
Name of each exchange on which registered NYSE