Commercial Paper, Program Amount

No definition available.

Name:	now_CommercialPaperProgramAmount
Namespace Prefix:	now_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line of Credit Facility, Option for Additional Borrowing Capacity

+ References

No definition available.

+ Details

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Namespace Prefix:	now_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Section S99
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
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

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
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+ Details

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

- Definition

The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

+ References

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+ Details

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

- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 235
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Balance Type:
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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:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

Subsequent Events (Details) - Subsequent Event - USD ($) $ in Billions	Apr. 20, 2026	Apr. 17, 2026	Apr. 01, 2026	Apr. 22, 2026
Subsequent Event [Line Items]
Line of credit facility, option for additional borrowing capacity			$ 2.0
Commercial paper, program amount			$ 3.0
Debt term (in years)			397 days
Commercial Paper				$ 2.1
Armis Security Ltd
Subsequent Event [Line Items]
Cash	$ 7.8
Revolving Credit Facility
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity			$ 3.0
Revolving Credit Facility \| Minimum
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate			0.60%
Revolving Credit Facility \| Maximum
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate			1.00%
Line of Credit \| Term Loan
Subsequent Event [Line Items]
Line of credit facility, maximum borrowing capacity		$ 4.0
Proceeds from lines of credit		$ 4.0
Line of Credit \| Minimum \| Term Loan
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate		0.60%
Line of Credit \| Maximum \| Term Loan
Subsequent Event [Line Items]
Debt instrument, basis spread on variable rate		1.00%