Enterprise value.

No definition available.

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Namespace Prefix:	payc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Date the credit facility terminates, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityExpirationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility first became available, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInitiationDate1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Description of the interest rate for the amounts borrowed under the credit facility, including the terms and the method for determining the interest rate (for example, fixed or variable, LIBOR plus a percentage, increasing rate, timing of interest rate resets, remarketing provisions).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateDescription
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The effective interest rate during the reporting period.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityInterestRateDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(2)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage of vesting of share-based compensation awards.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Expiration date for the purchase of an entity's own shares under a stock repurchase plan, in the CCYY-MM-DD format.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
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- Details

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- Details

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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

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Namespace Prefix:
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Balance Type:
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- Details

Name:	us-gaap_TitleOfIndividualAxis=payc_NonExecutiveEmployeesMember
Namespace Prefix:
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- Details

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- Details

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- Details

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- Details

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Subsequent Events - Additional Information (Detail) - USD ($)	Feb. 13, 2018	Feb. 12, 2018	Jan. 26, 2018	Oct. 30, 2017	May 01, 2017	Apr. 26, 2017	Feb. 08, 2017
Stock Repurchase Plan [Member]
Subsequent Event [Line Items]
Stock repurchase plan expiration date				Oct. 30, 2019			Jan. 31, 2019
Stock Repurchase Plan [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Stock repurchase plan, authorization amount				$ 75,000,000			$ 50,000,000
Revolving Credit Agreement [Member]
Subsequent Event [Line Items]
Line of credit facility agreement date		Feb. 12, 2018
Line of credit facility, maturity date		Feb. 12, 2020
Line of credit facility, drawn amount		$ 0
Revolving Credit Agreement [Member] \| Prime Rate [Member]
Subsequent Event [Line Items]
Line of credit facility, outstanding borrowings interest		1.00%
Revolving Credit Agreement [Member] \| LIBOR [Member]
Subsequent Event [Line Items]
Line of credit facility, outstanding borrowings interest		1.50%
Subsequent Event [Member] \| Stock Repurchase Plan [Member]
Subsequent Event [Line Items]
Stock repurchase plan expiration date	Feb. 12, 2020
Subsequent Event [Member] \| Stock Repurchase Plan [Member] \| Maximum [Member]
Subsequent Event [Line Items]
Stock repurchase plan, authorization amount	$ 100,000,000
Subsequent Event [Member] \| Revolving Credit Agreement [Member]
Subsequent Event [Line Items]
Loan, principal amount		$ 50,000,000
Line of credit facility, maximum borrowing capacity		$ 100,000,000
Line of credit facility, interest rate description		Borrowings under the Facility will generally bear interest at a prime rate plus 1.0% or, at our option, an adjusted LIBOR rate for the interest period in effect for such borrowing plus 1.5%.
Restricted Stock [Member] \| Vest 50% if Company's total enterprise value equals or exceeds $4.15 billion [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares						50.00%
Total enterprise value						$ 4,150,000,000
Restricted Stock [Member] \| Vest 50% if Company's total enterprise value equals or exceeds $4.45 billion [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares						50.00%
Total enterprise value						$ 4,450,000,000
Restricted Stock [Member] \| LTIP [Member]
Subsequent Event [Line Items]
Restricted shares of common stock issued					9,870	613,677
Restricted Stock [Member] \| Subsequent Event [Member] \| Non Executive Employees [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights			first three anniversaries
Restricted Stock [Member] \| Subsequent Event [Member] \| Executive Officers [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights			three equal annual tranches beginning on a specified initial vesting date and thereafter on the first and second anniversaries
Restricted Stock [Member] \| Subsequent Event [Member] \| Market-based Vesting Conditions [Member]
Subsequent Event [Line Items]
Number of shares vested			283,674
Restricted Stock [Member] \| Subsequent Event [Member] \| Time-based Vesting Conditions [Member]
Subsequent Event [Line Items]
Number of shares vested			226,799
Restricted Stock [Member] \| Subsequent Event [Member] \| Vest 50% if Company's total enterprise value equals or exceeds $4.15 billion [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares			50.00%
Total enterprise value			$ 5,900,000,000
Restricted Stock [Member] \| Subsequent Event [Member] \| Vest 50% if Company's total enterprise value equals or exceeds $4.45 billion [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares			50.00%
Total enterprise value			$ 6,200,000,000
Restricted Stock [Member] \| Subsequent Event [Member] \| Tranche One [Member] \| Non Executive Employees [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares			25.00%
Restricted Stock [Member] \| Subsequent Event [Member] \| Tranche Two [Member] \| Non Executive Employees [Member]
Subsequent Event [Line Items]
Market-based vesting percentage, restricted shares			25.00%
Restricted Stock [Member] \| Subsequent Event [Member] \| LTIP [Member]
Subsequent Event [Line Items]
Restricted shares of common stock issued			510,473