FAIR VALUE MEASUREMENTS AND THE FAIR VALUE OPTION (Schedule of Fair Value Measurements) (Details) Share data in Millions, unless otherwise specified	Dec. 31, 2014 USD ($)		Dec. 31, 2013 USD ($)		Dec. 31, 2014 KWE [Member] USD ($)	Dec. 31, 2014 KWE [Member] GBP (£)	Dec. 31, 2014 Currency forward contract GBP (£)	Dec. 31, 2014 Recurring [Member] USD ($)		Dec. 31, 2013 Recurring [Member] USD ($)	Dec. 31, 2014 Recurring [Member] Currency forward contract USD ($)		Dec. 31, 2013 Recurring [Member] Currency forward contract USD ($)	Dec. 31, 2014 Recurring [Member] Currency option contract USD ($)	Dec. 31, 2014 Recurring [Member] Level 1 [Member] USD ($)		Dec. 31, 2013 Recurring [Member] Level 1 [Member] USD ($)	Dec. 31, 2014 Recurring [Member] Level 1 [Member] Currency forward contract USD ($)		Dec. 31, 2013 Recurring [Member] Level 1 [Member] Currency forward contract USD ($)	Dec. 31, 2014 Recurring [Member] Level 1 [Member] Currency option contract USD ($)	Dec. 31, 2014 Recurring [Member] Level 2 [Member] USD ($)		Dec. 31, 2013 Recurring [Member] Level 2 [Member] USD ($)	Dec. 31, 2014 Recurring [Member] Level 2 [Member] Currency forward contract USD ($)		Dec. 31, 2013 Recurring [Member] Level 2 [Member] Currency forward contract USD ($)	Dec. 31, 2014 Recurring [Member] Level 2 [Member] Currency option contract USD ($)	Dec. 31, 2014 Recurring [Member] Level 3 [Member] USD ($)		Dec. 31, 2013 Recurring [Member] Level 3 [Member] USD ($)	Dec. 31, 2014 Recurring [Member] Level 3 [Member] Currency forward contract USD ($)		Dec. 31, 2013 Recurring [Member] Level 3 [Member] Currency forward contract USD ($)	Dec. 31, 2014 Recurring [Member] Level 3 [Member] Currency option contract USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Marketable securities								$ 6,500,000	[1]	$ 4,000,000					$ 6,500,000	[1]	$ 4,000,000					$ 0	[1]	$ 0					$ 0	[1]	$ 0
Unconsolidated investments								85,900,000		81,100,000					0		0					0		0					85,900,000		81,100,000
Derivative contract	30,600,000	[2]	9,600,000	[2]							23,900,000	[3]	(9,600,000)	6,700,000				0	[3]	0	0				23,900,000	[3]	(9,600,000)	6,700,000				0	[3]	0	0
Assets (liabilities), fair value disclosure								123,000,000		75,500,000					6,500,000		4,000,000					30,600,000		(9,600,000)					85,900,000		81,100,000
Shares in KWE					20.2	20.2
Investment in KWE, fair value					330,800,000
Investment in KWE, cost basis					333,800,000
Investments in KWE, carrying amount						203,100,000
Percentage of hedged investment in KWE					46.00%	46.00%
Notional Amount							£ 92,500,000

[1] Included in other assets.

[2] Hedges are presented gross in the consolidated balance sheet. Hedge assets are included in other assets and hedge liabilities are included in other liabilities.

[3] See further discussion of currency forward contracts.