Goodwill and Other Intangible Assets, Net - Summary of Goodwill Activity (Detail) $ in Millions	6 Months Ended
Jun. 30, 2017 USD ($)
Goodwill [Line Items]
Beginning balance	$ 10,218.9
Acquisitions	172.1
Other Adjustments	8.9
Impairment	(17.1)
Foreign Currency	79.1
Ending balance	10,461.9
Live [Member] \| Operating Segments [Member]
Goodwill [Line Items]
Beginning balance	3,639.9
Acquisitions	172.1
Other Adjustments	22.1
Foreign Currency	19.6
Ending balance	3,853.7
Learn [Member] \| Operating Segments [Member]
Goodwill [Line Items]
Beginning balance	2,785.4
Other Adjustments	3.9
Foreign Currency	37.5
Ending balance	2,826.8
Work [Member] \| Operating Segments [Member]
Goodwill [Line Items]
Beginning balance	1,871.0
Other Adjustments	(16.9)
Foreign Currency	16.2
Ending balance	1,870.3
Play [Member] \| Operating Segments [Member]
Goodwill [Line Items]
Beginning balance	1,161.4
Other Adjustments	(7.6)
Foreign Currency	3.9
Ending balance	1,157.7
Other [Member] \| Operating Segments [Member]
Goodwill [Line Items]
Beginning balance	761.2
Other Adjustments	7.4
Impairment	(17.1)
Foreign Currency	1.9
Ending balance	$ 753.4

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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