Income Taxes - Components of Deferred Taxes (Detail) - USD ($) $ in Millions	Dec. 31, 2015	Dec. 31, 2014
Deferred tax assets:
Inventory	$ 159.7	$ 275.1
Net operating loss carryover	117.4	116.9
Tax credit carryover	207.8	185.5
Capital loss carryover	4.2	7.4
Accrued liabilities	190.2	106.7
Share-based compensation	59.0	59.9
Accounts receivable	23.7
Unremitted earnings of foreign subsidiaries		32.3
Other	133.6	50.3
Total deferred tax assets	895.6	834.1
Less: Valuation allowances	(72.7)	(122.8)
Total deferred tax assets after valuation allowances	822.9	711.3
Deferred tax liabilities:
Fixed assets	(144.6)	(104.3)
Intangible assets	(2,337.2)	(95.9)
Unremitted earnings of foreign subsidiaries	(1,374.8)
Other	(4.3)
Total deferred tax liabilities	(3,860.9)	(200.2)
Total net deferred income taxes	$ (3,038.0)
Total net deferred income taxes		$ 511.1