Description of the Business	6 Months Ended
Jun. 30, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of the Business	Description of the BusinessServiceNow’s purpose is to make the world of work, work better for people. We believe that people want the technology they use in their work to be more efficient and easier to use. We build applications to meet that demand by automating existing processes and creating efficient, digitized workflows with a consumer grade user experience. Our products and services enable the steps of a job to flow naturally across disparate departments, systems and processes of a business. ServiceNow delivers digital workflows on a single enterprise cloud platform called the Now Platform®. Our product portfolio is currently focused on providing Information Technology (“IT”), Employee and Customer workflows in standardized product offerings. We also enable our customers to design and build their own custom workflow applications using our Creator workflows, formerly called the Now Platform App Engine, and to integrate those applications with third party systems through our Integration Hub.

The entire disclosure for the business description and basis of presentation concepts. Business description describes the nature and type of organization including but not limited to organizational structure as may be applicable to holding companies, parent and subsidiary relationships, business divisions, business units, business segments, affiliates and information about significant ownership of the reporting entity. Basis of presentation describes the underlying basis used to prepare the financial statements (for example, US Generally Accepted Accounting Principles, Other Comprehensive Basis of Accounting, IFRS).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-URI http://asc.fasb.org/topic&trid=2122369

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-URI http://asc.fasb.org/topic&trid=2122149

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-URI http://asc.fasb.org/topic&trid=2134479

Name:	us-gaap_BusinessDescriptionAndBasisOfPresentationTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration