Organization consolidation and presentation of financial statements.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

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- Definition

The amount for notes payable (written promise to pay), due to related parties.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

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The redemption (or callable) amount of currently redeemable preferred stock. Includes amounts representing dividends not currently declared or paid but which will be payable under the redemption features or for which ultimate payment is solely within the control of the issuer.

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- Definition

The cash inflow associated with the amount received from entity's first offering of stock to the public.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

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-Glossary Financing Activities

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- Definition

The cash inflow associated with the amount received from entity's raising of capital via private rather than public placement.

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-Publisher FASB

-Name Accounting Standards Codification

-Glossary Financing Activities

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The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity.

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- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

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-Publisher FASB

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Cash received on stock transaction after deduction of issuance costs.

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No definition available.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

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No definition available.

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Number of additional shares authorized for issuance under an established share-based compensation plan.

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Per share or per unit amount of equity securities issued.

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- Definition

The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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-Name Regulation S-X (SX)

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-Section 02

-Paragraph 29, 30, 31

-Article 5

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Number of new stock issued during the period.

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Organization and Description of Business - Additional Information (Detail) - USD ($)							9 Months Ended
	Sep. 21, 2015	Sep. 15, 2015	May. 20, 2015	Jan. 21, 2015	Apr. 21, 2014	Dec. 31, 2013	Sep. 30, 2015	Sep. 30, 2014
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Gross proceeds received from public offering					$ 69,100,000			$ 62,843,000
IPO [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock issued, shares					7,641,750
Offering price per share					$ 15.00
Proceeds from sale of shares received from selling stockholders					$ 0
Proceeds from initial public offering, net of offering costs					$ 62,800,000
Public Offering [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock issued, shares				6,422,750
Offering price per share				$ 22.50
Proceeds from sale of common stock under public offering				$ 0
Secondary Offering [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock issued, shares		4,500,000	8,000,000
Offering price per share		$ 37.95	$ 36.25
Proceeds from sale of common stock under public offering		$ 0	$ 0
Additional purchase of common shares	675,000
Paycom Software, Inc. [Member] \| IPO [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock issued, shares					4,606,882
Executive Officers And Other Selling Shareholders [Member] \| IPO [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Common stock sold by selling stockholders					3,034,868
Restricted Stock [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Conversion of units to shares						8,121,101
Series C Preferred Units [Member] \| WCAS Capital Partners IV, L.P., [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Preferred units held, amount						$ 46,200,000
Common Stock [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Conversion of units to shares						45,708,573
14% Note due 2017 [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Debt instrument, interest rate						14.00%
14% Note due 2017 [Member] \| WCAS Capital Partners IV, L.P., [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Notes payable, due date							Apr. 03, 2017
Notes payable, amount						$ 46,200,000
10% Senior Note due 2022 [Member] \| WCAS Capital Partners IV, L.P., [Member] \| IPO [Member]
Organization Consolidation And Presentation Of Financial Statements [Line Items]
Debt instrument, interest rate					10.00%
Repayment for senior notes					$ 3,300,000