STOCK-BASED COMPENSATION - Components of Stock Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Options:
Total stock-based compensation	$ 8.7	$ 10.3
Tax benefits on stock-based compensation expense	2.0	10.7
To be settled with stock
Options:
Total stock-based compensation expense	6.0	5.2
Employee contributions for above stock plans	2.7	5.1
Total stock-based compensation	8.7	10.3
Tax benefits on stock-based compensation expense	1.4	1.9
To be settled with stock | Tax benefits on stock-based compensation payments
Options:
Tax benefits on stock-based compensation expense	0.6	8.8
To be settled with stock | Stock-based retirement plans contributions
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Total stock-based compensation expense	1.9	1.4
To be settled with stock | Deferred Stock Compensation Program
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Total stock-based compensation expense	0.5	0.7
To be settled with stock | Stock-based retirement plans
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Total stock-based compensation expense	0.2	0.3
To be settled with stock | Discount Stock Plan
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Total stock-based compensation expense	0.3	0.3
To be settled with stock | Performance Stock Unit (PSU) awards
Options:
Total stock-based compensation expense	0.9	1.3
To be settled with stock | Performance Stock Unit (PSU) awards | 2018 PSU - TSR based
Options:
Total stock-based compensation expense	0.3	0.0
To be settled with stock | Performance Stock Unit (PSU) awards | 2018 PSU - EBIT CAGR based
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Total stock-based compensation expense	0.6	0.0
To be settled with stock | Restricted Stock Unit awards
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Total stock-based compensation expense	0.5	0.6
To be settled with stock | Profitable Growth Incentive awards
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Total stock-based compensation expense	0.5	0.4
To be settled with stock | Other, primarily non-employee directors restricted stock
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Total stock-based compensation expense	0.3	0.2
To be settled in cash
Options:
Total stock-based compensation expense	1.6	1.1
To be settled in cash | Stock-based retirement plans contributions
Options:
Total stock-based compensation expense	0.2	0.4
To be settled in cash | Deferred Stock Compensation Program
Options:
Total stock-based compensation expense	0.0	0.0
To be settled in cash | Stock-based retirement plans
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Total stock-based compensation expense	0.0	0.0
To be settled in cash | Discount Stock Plan
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Total stock-based compensation expense	0.0	0.0
To be settled in cash | Performance Stock Unit (PSU) awards
Options:
Total stock-based compensation expense	(0.1)	0.2
To be settled in cash | Performance Stock Unit (PSU) awards | 2018 PSU - TSR based
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Total stock-based compensation expense	0.3	0.0
To be settled in cash | Performance Stock Unit (PSU) awards | 2018 PSU - EBIT CAGR based
Options:
Total stock-based compensation expense	0.7	0.0
To be settled in cash | Restricted Stock Unit awards
Options:
Total stock-based compensation expense	0.0	0.0
To be settled in cash | Profitable Growth Incentive awards
Options:
Total stock-based compensation expense	0.5	0.5
To be settled in cash | Other, primarily non-employee directors restricted stock
Options:
Total stock-based compensation expense	$ 0.0	$ 0.0