ACCUMULATED OTHER COMPREHENSIVE LOSS - Schedule of Information About Amounts Reclassified from Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Amounts reclassified from accumulated other comprehensive loss to affected line on Consolidated Statements of Operations
Other income, net									$ 11.5	$ 8.2	$ 4.0
Provision for income taxes									(93.3)	(119.6)	(39.2)
Net income	$ 309.5	$ 325.2	$ (121.9)	$ 310.6	$ 280.2	$ 274.7	$ 242.3	$ 249.7	823.4	1,046.9	722.2
Cost of sales									(1,080.6)	(1,114.4)	(939.4)
Selling, general, and administrative expenses									(1,228.4)	(1,242.2)	(1,088.5)
Income before provision for income taxes									916.7	1,166.5	761.4
Special charges (gain), net									0.0	0.0	$ (7.1)
Amount Reclassified from Accumulated Other Comprehensive Loss | Foreign currency translation adjustments
Amounts reclassified from accumulated other comprehensive loss to affected line on Consolidated Statements of Operations
Other income, net									6.4	6.6
Provision for income taxes									(1.6)	(1.6)
Net income									4.8	5.0
Amount Reclassified from Accumulated Other Comprehensive Loss | (Loss) gain on hedges
Amounts reclassified from accumulated other comprehensive loss to affected line on Consolidated Statements of Operations
Provision for income taxes									(5.0)	(11.0)
Net income									14.2	33.2
Cost of sales									18.4	40.9
Selling, general, and administrative expenses									2.2	1.9
Other income, net									1.4	(1.4)
Income before provision for income taxes									19.2	44.2
Amount Reclassified from Accumulated Other Comprehensive Loss | (Loss) gain on available-for-sale investments
Amounts reclassified from accumulated other comprehensive loss to affected line on Consolidated Statements of Operations
Other income, net									(0.3)	(0.4)
Provision for income taxes									(0.6)	(0.3)
Net income									(0.9)	(0.7)
Amount Reclassified from Accumulated Other Comprehensive Loss | Amortization of pension adjustments
Amounts reclassified from accumulated other comprehensive loss to affected line on Consolidated Statements of Operations
Other income, net									(0.9)	(0.7)
Provision for income taxes									0.2	0.1
Net income									$ (0.7)	$ (0.6)