Quarterly report pursuant to Section 13 or 15(d)

DEBT AND CREDIT FACILITIES (Schedule Of Long-Term Debt) (Details)

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DEBT AND CREDIT FACILITIES (Schedule Of Long-Term Debt) (Details) (USD $)
 9 Months Ended 12 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Debt Instrument [Line Items]    
Total Face Amount $ 4,712,100,000 $ 5,497,100,000
Long-term Debt 3,327,500,000 4,054,800,000
Current portion of long-term debt 7,900,000 94,100,000
Long-term debt noncurrent portion 3,319,600,000 3,960,700,000
Term Loan - $1.25 Billion [Member]
    
Debt Instrument [Line Items]    
Extinguishment of Debt, Amount 847,100,000  
Type   Variable
Final Maturity   2016
Total Face Amount   847,100,000
Long-term Debt   847,100,000 [1]
Total amounts paid down on original loan   402,800,000
Term Loan Original Amount 0 1,250,000,000
Current portion of long-term debt   94,100,000
Imputed interest rate   1.83%
Seven Hundred Million Four Point Eight Seven Five Two Thousand Twenty-one Senior Note [Member]
    
Debt Instrument [Line Items]    
Stated interest rate 4.875% 4.875%
Type Fixed Fixed
Final Maturity 2021 2021
Total Face Amount 700,000,000 700,000,000
Long-term Debt 699,400,000 [2] 699,400,000 [2]
Debt Instrument, Unamortized Discount 600,000 600,000
Imputed interest rate 4.89% 4.88%
$500 million 4.80% 2020 Senior Notes [Member]
    
Debt Instrument [Line Items]    
Stated interest rate 4.80% 4.80%
Type Fixed Fixed
Final Maturity 2020 2020
Total Face Amount 500,000,000 500,000,000
Long-term Debt 499,200,000 [3] 499,200,000 [3]
Debt Instrument, Unamortized Discount 800,000 800,000
Imputed interest rate 4.83% 4.80%
$800 Million 6.25% 2040 Senior Notes [Member]
    
Debt Instrument [Line Items]    
Stated interest rate 6.25% 6.25%
Type Fixed Fixed
Final Maturity 2040 2040
Total Face Amount 800,000,000 800,000,000
Long-term Debt 790,400,000 [4] 790,200,000 [4]
Debt Instrument, Unamortized Discount 9,600,000 9,800,000
Imputed interest rate 6.34% 6.25%
$400 Million 5.90% 2020 Senior Notes [Member]
    
Debt Instrument [Line Items]    
Stated interest rate 5.90% 5.90%
Type Fixed Fixed
Final Maturity 2020 2020
Total Face Amount 400,000,000 400,000,000
Long-term Debt 398,400,000 [5] 398,200,000 [5]
Debt Instrument, Unamortized Discount 1,600,000 1,800,000
Imputed interest rate 5.98% 5.90%
$500 Million 3.95% 2018 Senior Notes [Member]
    
Debt Instrument [Line Items]    
Stated interest rate 3.95% 3.95%
Type Fixed Fixed
Final Maturity 2018 2018
Total Face Amount 500,000,000.0 500,000,000.0
Long-term Debt 496,300,000 [6] 495,700,000 [6]
Debt Instrument, Unamortized Discount 3,700,000 4,300,000
Imputed interest rate 4.14% 4.14%
Revolving Credit Facility [Member]
    
Debt Instrument [Line Items]    
Type Variable Variable
Final Maturity 2017 2017
Total Face Amount 1,750,000,000.00 1,750,000,000.00
Credit facility, amount outstanding 380,000,000 [7] 325,000,000 [7]
Imputed interest rate 2.08% 2.02%
Credit facility remaining capacity 1,300,000,000 1,400,000,000
Letter of Credit [Member]
    
Debt Instrument [Line Items]    
Credit facility, amount outstanding 27,700,000 27,700,000
Equipment Loans [Member]
    
Debt Instrument [Line Items]    
Total Face Amount 62,100,000  
Long-term Debt 62,100,000  
Interest Rate Swap [Member]
    
Debt Instrument [Line Items]    
Fair Value Adjustment to Interest Rate Hedge $ 1,700,000  
[1] During the first quarter of 2013, the term loan was repaid in full through repayments totaling $847.1 million. As of December 31, 2012, $402.8 million had been paid on the original $1.25 billion term loan and, of the remaining term loan, $94.1 million was classified as Current portion of debt. The current classification was based upon the principal payment terms of the arrangement requiring principal payments on each three-month anniversary following the funding of the term loan.
[2] As of September 30, 2013 and December 31, 2012, the $700 million 4.875 percent senior notes were recorded at a par value of $700 million less unamortized discounts of $0.6 million for each period, based on an imputed interest rate of 4.89 percent.
[3] As of September 30, 2013 and December 31, 2012, the $500 million 4.80 percent senior notes were recorded at a par value of $500 million less unamortized discounts of $0.8 million for each period, based on an imputed interest rate of 4.83 percent.
[4] As of September 30, 2013 and December 31, 2012, the $800 million 6.25 percent senior notes were recorded at par value of $800 million less unamortized discounts of $9.6 million and $9.8 million, respectively, based on an imputed interest rate of 6.34 percent.
[5] As of September 30, 2013 and December 31, 2012, the $400 million 5.90 percent senior notes were recorded at a par value of $400 million less unamortized discounts of $1.6 million and $1.8 million, respectively, based on an imputed interest rate of 5.98 percent.
[6] As of September 30, 2013 and December 31, 2012, the $500 million 3.95 percent senior notes were recorded at a par value of $500 million less unamortized discounts of $3.7 million and $4.3 million, respectively, based on an imputed interest rate of 4.14 percent.
[7] As of September 30, 2013 and December 31, 2012, $380.0 million and $325.0 million revolving loans were drawn under the credit facility, respectively, and the principal amount of letter of credit obligations totaled $27.7 million for each period, thereby reducing available borrowing capacity to $1.3 billion and $1.4 billion for each period, respectively.