Description of Business, Basis of Presentation and Significant Accounting Policies - Additional Information (Detail) - USD ($) shares in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Revenue	$ 1,917,000,000	$ 1,836,000,000	$ 1,899,000,000
Cost of revenue	731,000,000	817,000,000	944,000,000
Depreciation expense	139,000,000	138,000,000	$ 104,000,000
Impairment of long-lived assets	$ 0
Antidilutive options to purchase were excluded from computation of diluted earnings per share (in shares)			115.5
Revision of Prior Period, Reclassification, Adjustment | Reclassification, From Recurring Services To Consulting Services
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Revenue		108,000,000	$ 111,000,000
Cost of revenue		80,000,000	85,000,000
Revision of Prior Period, Reclassification, Adjustment | Reclassification, From Recurring Services To Perpetual Software Hardware And Other
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Revenue		34,000,000	34,000,000
Cost of revenue		$ 26,000,000	$ 26,000,000
Internal-Use Software
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Period capitalized on a straight-line basis when the asset is substantially ready for use	3 years
Minimum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Contract term	1 month
Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Contract term	5 years
Equipment | Minimum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives (in years)	3 years
Equipment | Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives (in years)	5 years
Building | Minimum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives (in years)	25 years
Building | Maximum
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives (in years)	45 years
Customer Rental Equipment
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Estimated useful lives (in years)	3 years
Employee Stock Option
Basis Of Presentation And Summary Of Significant Accounting Policies [Line Items]
Antidilutive options to purchase were excluded from computation of diluted earnings per share (in shares)	0.2	2.0	2.0