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Revenue Recognition - Additional information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Remaining performance obligations	$ 1,410
Minimum [Member]
Term of master service agreements	1 year
Short termination notice of master service agreements	30 days
Maximum [Member]
Term of master service agreements	3 years
Short termination notice of master service agreements	90 days

X

- Definition

Term of master service agreements ("MSAs"), 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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X

- Definition

Short termination notice of master service agreements ("MSAs"), in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact

+ References

No definition available.

+ Details

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X

- Definition

Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 13
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130556-203045

+ Details

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Period Type:	instant

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