Revenue Recognition - Summary of Revenue Disaggregated by Major Product Offerings and Timing of Revenue Recognition (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Disaggregation Of Revenue [Line Items]
Revenues	$ 888	$ 882	$ 2,647	$ 2,606
Operating Segments | Products Transferred at a Point in Time
Disaggregation Of Revenue [Line Items]
Revenues	104	95	310	280
Operating Segments | Products and Services Transferred Over Time
Disaggregation Of Revenue [Line Items]
Revenues	784	787	2,337	2,326
Media | Operating Segments
Disaggregation Of Revenue [Line Items]
Revenues	888	882	2,647	2,606
Media | Operating Segments | Measurement
Disaggregation Of Revenue [Line Items]
Revenues	652	637	1,941	1,898
Media | Operating Segments | Impact/Content
Disaggregation Of Revenue [Line Items]
Revenues	$ 236	$ 245	$ 706	$ 708