Percentage of Revenue by Geographic Area (Detail) - Total Revenue - Geographic Concentration Risk [Member]	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Concentration Risk [Line Items]
Concentration Risk, Percentage	100.00%	100.00%	100.00%
North America [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	41.00%	48.00%	51.00%
Europe [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	40.00%	38.00%	37.00%
APAC Other [Member]
Concentration Risk [Line Items]
Concentration Risk, Percentage	19.00%	14.00%	12.00%