Business Acquisitions - Intangible Assets and Estimated Useful Lives (Detail) - Gracenote - USD ($) $ in Millions		3 Months Ended
	Feb. 01, 2017	Mar. 31, 2017
Acquired Finite Lived Intangible Assets [Line Items]
Provisional allocation of purchase price to identified intangible assets	$ 341
Customer - related intangibles
Acquired Finite Lived Intangible Assets [Line Items]
Provisional allocation of purchase price to identified intangible assets	$ 109
Customer - related intangibles | Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	10 years
Customer - related intangibles | Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Content database
Acquired Finite Lived Intangible Assets [Line Items]
Provisional allocation of purchase price to identified intangible assets	$ 168
Content database | Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	12 years	12 years
Content database | Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	16 years	16 years
Trade names and trademarks
Acquired Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Provisional allocation of purchase price to identified intangible assets	$ 7
Computer software
Acquired Finite Lived Intangible Assets [Line Items]
Provisional allocation of purchase price to identified intangible assets	$ 57
Computer software | Minimum
Acquired Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	7 years
Computer software | Maximum
Acquired Finite Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years