Quarterly report pursuant to Section 13 or 15(d)

LONG-TERM DEBT (Senior Notes) (Details)

v2.4.0.8
LONG-TERM DEBT (Senior Notes) (Details) (USD $)
Share data in Millions, except Per Share data, unless otherwise specified
9 Months Ended
Sep. 30, 2014
May 31, 2014
5.375% Senior Notes due 2022 [Member]
   
Debt Instrument [Line Items]    
Face amount   $ 250,000,000
Interest rate, stated percentage 5.375% 5.375%
5.375% Senior Notes due 2022 [Member] | Prior to June 15, 2017 [Member]
   
Debt Instrument [Line Items]    
Redemption price, percentage 100.00%  
5.375% Senior Notes due 2022 [Member] | Redemption, Equity Offering [Member]
   
Debt Instrument [Line Items]    
Redemption price, percentage 105.375%  
Percentage of notes which may be redeemed 35.00%  
5.375% Senior Notes due 2022 [Member] | After June 15, 2017 [Member]
   
Debt Instrument [Line Items]    
Redemption price, percentage 104.0313%  
5.375% Senior Notes due 2022 [Member] | Redemption, Defined Changes of Control [Member]
   
Debt Instrument [Line Items]    
Redemption price, percentage 101.00%  
2.5% Convertible Senior Notes Due 2019 [Member]
   
Debt Instrument [Line Items]    
Face amount 275,000,000 275,000,000
Interest rate, stated percentage 2.50% 2.50%
Conversion ratio 0.0288363  
Conversion premium 52.50%  
Last reported sale price used to calculate conversion premium $ 22.74  
Maximum number of shares issuable upon conversion 7.9  
Carrying amount of equity component $ 22,000,000  
Debt discount amortization period 4 years 3 months 18 days  
Effective interest rate 5.00%  
2.5% Convertible Senior Notes Due 2019 [Member] | Redemption, Defined Changes of Control [Member]
   
Debt Instrument [Line Items]    
Redemption price, percentage 100.00%