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 $)
 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Dec. 31, 2012
$1.25 Billion Term Loan [Member]
Jun. 30, 2013
$1.25 Billion Term Loan [Member]
Jun. 30, 2013
$700 million 4.875% 2021 Senior Notes [Member]
Dec. 31, 2012
$700 million 4.875% 2021 Senior Notes [Member]
Jun. 30, 2013
$500 million 4.80% 2020 Senior Notes [Member]
Dec. 31, 2012
$500 million 4.80% 2020 Senior Notes [Member]
Jun. 30, 2013
$800 Million 6.25% 2040 Senior Notes [Member]
Dec. 31, 2012
$800 Million 6.25% 2040 Senior Notes [Member]
Jun. 30, 2013
$400 Million 5.90% 2020 Senior Notes [Member]
Dec. 31, 2012
$400 Million 5.90% 2020 Senior Notes [Member]
Dec. 28, 2012
Series 2008A - Tranche A [Member]
Jun. 30, 2013
$500 Million 3.95% 2018 Senior Notes [Member]
Dec. 31, 2012
$500 Million 3.95% 2018 Senior Notes [Member]
Jun. 30, 2013
Revolving Loan [Member]
Dec. 31, 2012
Revolving Loan [Member]
Jun. 30, 2013
Letter of Credit [Member]
Debt Instrument [Line Items]                                    
Stated interest rate         4.875% 4.875% 4.80% 4.80% 6.25% 6.25% 5.90% 5.90%   3.95% 3.95%      
Type     Variable   Fixed Fixed Fixed Fixed Fixed Fixed Fixed Fixed   Fixed Fixed Variable Variable  
Final Maturity     2016   2021 2021 2020 2020 2040 2040 2020 2020   2018 2018 2017 2017  
Total Face Amount $ 4,650,000,000 $ 5,497,100,000 $ 847,100,000   $ 700,000,000 $ 700,000,000 $ 500,000,000 $ 500,000,000 $ 800,000,000 $ 800,000,000 $ 400,000,000 $ 400,000,000 $ 270,000,000 $ 500,000,000.0 $ 500,000,000.0 $ 1,750,000,000.00 $ 1,750,000,000.00  
Long-term Debt, Gross 3,323,300,000 4,054,800,000 847,100,000 [1]   699,400,000 699,400,000 [2] 499,200,000 [3] 499,200,000 [3] 790,300,000 [4] 790,200,000 [4] 398,300,000 [5] 398,200,000 [5]   496,100,000 [6] 495,700,000 [6]      
Current portion of long-term debt 0 94,100,000                                
Long-term debt noncurrent portion 3,323,300,000 3,960,700,000                                
Total amounts paid down on original loan     402,800,000                              
Term Loan Original Amount     1,250,000,000 0                            
Current portion of long-term debt     94,100,000                              
Debt Instrument, Unamortized Discount         600,000 600,000 800,000 800,000 9,700,000 9,800,000 1,700,000 1,800,000   3,900,000 4,300,000      
Imputed interest rate     1.83%   4.89% 4.88% 4.83% 4.80% 6.34% 6.25% 5.98% 5.90%   4.14% 4.14% 2.05% 2.02%  
Credit facility, amount outstanding                               440,000,000 [7] 325,000,000 [7] 27,700,000
Credit facility remaining capacity                               $ 1,300,000,000 $ 1,400,000,000  
[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 down 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 June 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 June 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 June 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 $9.7 million and $9.8 million, respectively, based on an imputed interest rate of 6.34 percent.
[5] As of June 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 $1.7 million and $1.8 million, respectively, based on an imputed interest rate of 5.98 percent.
[6] As of June 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 $3.9 million and $4.3 million, respectively, based on an imputed interest rate of 4.14 percent.
[7] As of June 30, 2013 and December 31, 2012, $440.0 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.