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Segment, Other Supplemental Information and Concentrations - Regional Segment Revenue and Gross Margin for Company (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Segment Reporting Information [Line Items]      
Revenue $ 1,836 $ 1,899 $ 2,164
Total gross profit 1,019 955 1,026
Total segment gross profit 1,072 1,013 1,095
Stock-based compensation expense 16 14 15
Acquisition, integration and reorganization-related costs 14 11 5
Amortization of capitalized software costs 23 33 49
Selling, general and administrative expenses 669 618 666
Research and development expenses 334 327 317
Income from operations 16 10 43
Operating Segments | Americas      
Segment Reporting Information [Line Items]      
Revenue 1,025 1,057 1,126
Total gross profit 631 626 621
Operating Segments | EMEA      
Segment Reporting Information [Line Items]      
Revenue 485 492 587
Total gross profit 273 239 275
Operating Segments | APJ      
Segment Reporting Information [Line Items]      
Revenue 326 350 451
Total gross profit $ 168 $ 148 $ 199