Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 4,054.6	$ 3,858.6	$ 7,320.9	$ 5,173.5
Operating income (loss)	423.1	137.7	579.1	263.1
Total assets	33,950.0	33,955.3	33,950.0	33,955.3	$ 33,837.5
Restructuring Costs [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(30.5)	(11.0)	(43.8)	(28.7)
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(111.1)	(130.6)	(210.8)	(171.6)
Total assets	1,250.2	10,270.6	1,250.2	10,270.6
Live [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,277.6	1,123.0	2,345.4	1,445.1
Operating income (loss)	96.2	2.5	153.8	34.5
Total assets	13,840.8	10,682.3	13,840.8	10,682.3
Learn [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,011.4	911.7	1,580.5	1,296.6
Operating income (loss)	304.5	233.3	392.7	318.1
Total assets	5,971.3	3,138.8	5,971.3	3,138.8
Work [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	737.7	646.8	1,351.4	915.4
Operating income (loss)	120.5	27.2	183.4	67.7
Total assets	5,357.8	3,266.2	5,357.8	3,266.2
Play [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	782.0	685.0	1,410.0	746.1
Operating income (loss)	89.0	2.2	145.3	0.1
Total assets	4,994.8	3,704.0	4,994.8	3,704.0
Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	245.9	492.1	633.6	770.3
Operating income (loss)	(45.5)	14.1	(41.5)	43.0
Total assets	$ 2,535.1	$ 2,893.4	$ 2,535.1	$ 2,893.4