PENSION PLANS (Details 8) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	$ 2,078.5	$ 2,036.5	$ 1,978.7
Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	1,271.6	1,039.2
Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	441.6	97.6
Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	365.3	687.7
Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	212.0
U.S. Equity Securities
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	384.6	79.6
U.S. Equity Securities | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	241.4	43.2
U.S. Equity Securities | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	143.2	36.4
U.S. Equity Securities | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
U.S. Equity Securities | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Non-U.S. Equity Securities
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	317.1	122.7
Non-U.S. Equity Securities | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	248.6	118.2
Non-U.S. Equity Securities | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	38.6	0.8
Non-U.S. Equity Securities | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	29.9	3.7
Non-U.S. Equity Securities | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Acquisition plan receivable
Defined benefit pension plan assets [Abstract]
Fair value of plan assets		212.0
Acquisition plan receivable | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets		0.0
Acquisition plan receivable | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets		0.0
Acquisition plan receivable | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets		0.0
Acquisition plan receivable | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets		212.0
Cash and Cash Equivalents
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	259.6	60.1
Cash and Cash Equivalents | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Cash and Cash Equivalents | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	259.6	60.1
Cash and Cash Equivalents | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Cash and Cash Equivalents | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
US Treasury Securities
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	187.6	427.6
US Treasury Securities | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	18.2	41.7
US Treasury Securities | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
US Treasury Securities | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	169.4	385.9
US Treasury Securities | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Corporate Debt Securities
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	181.6	314.2
Corporate Debt Securities | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	51.8	52.8
Corporate Debt Securities | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.2	0.3
Corporate Debt Securities | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	129.6	261.1
Corporate Debt Securities | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Asset-backed Securities
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	97.8	155.6
Asset-backed Securities | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	61.4	118.6
Asset-backed Securities | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Asset-backed Securities | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	36.4	37.0
Asset-backed Securities | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Hedge Funds, Equity
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	380.6	335.6
Hedge Funds, Equity | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	380.6	335.6
Hedge Funds, Equity | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Hedge Funds, Equity | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Hedge Funds, Equity | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Real Estate Funds
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	22.5	27.4
Real Estate Funds | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	22.5	27.4
Real Estate Funds | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Real Estate Funds | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Real Estate Funds | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Private Equity Funds
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	16.4	18.4
Private Equity Funds | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	16.4	18.4
Private Equity Funds | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Private Equity Funds | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Private Equity Funds | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Absolute Return Strategies
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	230.7	283.3
Absolute Return Strategies | Net Asset Value
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	230.7	283.3
Absolute Return Strategies | Fair Value, Inputs, Level 1
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Absolute Return Strategies | Fair Value, Inputs, Level 2
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	0.0	0.0
Absolute Return Strategies | Fair Value, Inputs, Level 3
Defined benefit pension plan assets [Abstract]
Fair value of plan assets	$ 0.0	$ 0.0