Segment Information - Schedule of Segment Reporting Information, by Segment (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Segment Reporting Information [Line Items]
Net sales	$ 3,678.2	$ 3,954.6	$ 10,999.1	$ 9,128.1
Operating income (loss)	323.4	323.9	902.5	587.0
Total assets	33,888.0	34,415.5	33,888.0	34,415.5	$ 33,837.5
Restructuring Costs [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(38.4)	(13.0)	(82.2)	(41.7)
Corporate [Member]
Segment Reporting Information [Line Items]
Operating income (loss)	(95.2)	(90.1)	(306.0)	(261.7)
Total assets	1,323.4	10,690.4	1,323.4	10,690.4
Live [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	1,483.3	1,450.2	3,828.7	2,895.3
Operating income (loss)	173.1	136.1	326.9	170.6
Total assets	14,358.9	10,301.8	14,358.9	10,301.8
Learn [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	642.0	637.8	2,222.5	1,934.4
Operating income (loss)	67.7	124.3	460.4	442.4
Total assets	5,823.5	3,022.2	5,823.5	3,022.2
Work [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	738.2	726.9	2,089.6	1,642.3
Operating income (loss)	122.6	116.8	306.0	184.5
Total assets	5,413.5	3,615.2	5,413.5	3,615.2
Play [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	610.6	596.5	2,020.6	1,342.6
Operating income (loss)	68.5	3.6	213.8	3.7
Total assets	4,836.3	3,766.3	4,836.3	3,766.3
Other [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Net sales	204.1	543.2	837.7	1,313.5
Operating income (loss)	25.1	46.2	(16.4)	89.2
Total assets	$ 2,132.4	$ 3,019.6	$ 2,132.4	$ 3,019.6