Annual report pursuant to Section 13 and 15(d)

STOCK COMPENSATION PLANS STOCK COMPENSATION PLANS (Share Based Compensation Arrangement by Share-based Payment Award) (Details)

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STOCK COMPENSATION PLANS STOCK COMPENSATION PLANS (Share Based Compensation Arrangement by Share-based Payment Award) (Details)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 1,633,866 1,169,151    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 1,211,251      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (410,193)      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (336,343)      
Common Stock, Capital Shares Reserved for Future Issuance 3,029,242      
Restricted Awards [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 586,084 393,787 425,166 371,712
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 396,844 151,869 125,059  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (118,973) (161,741) (61,330)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (85,574) (21,507) (10,275)  
Performance Shares [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 1,040,453 772,484 877,435 843,238
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 806,271 501,346 263,816  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (289,054) (574,518) (215,870)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period (249,248) (31,779) (13,749)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested or Expected to Vest, Outstanding, Number 1,030,351      
Directors Retainer and Voluntary Shares [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 7,329 2,880 2,611 2,509
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 8,136 1,823 1,815  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period (2,166) (1,554) (1,713)  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeited in Period 1,521 0 0  
Employee Plans [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common Stock, Capital Shares Reserved for Future Issuance 2,988,310      
Ice Plan and Two Thousand Twelve Equity Plan [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share Based Goods And Nonemployee Services Transaction Valuation Method Payout Rate 23.00% 50.00% 50.00%  
Directors Plan [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Common Stock, Capital Shares Reserved for Future Issuance 40,932      
Grants Associated with a Prior Period Payout Exceeding Target [Member] | Ice Plan and Two Thousand Twelve Equity Plan [Member]
       
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 54,051 191,506 71,956