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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 $)
 6 Months Ended 12 Months Ended
Jun. 30, 2014
Dec. 31, 2013
Debt Instrument [Line Items] Ìý Ìý
Total Face Amount $ 4,954,500,000 $ 4,814,800,000
Letters of credit outstanding 48,000,000 48,000,000
Long-term Debt 3,454,100,000 3,043,500,000
Current portion of long-term debt 161,100,000 20,900,000
Long-term debt noncurrent portion 3,293,000,000 3,022,600,000
Seven Hundred Million Four Point Eight Seven Five Two Thousand Twenty-one Senior Note [Member]
 Ìý Ìý
Debt Instrument [Line Items] Ìý Ìý
Stated interest rate 4.875% Ìý
Type Fixed Fixed
Final Maturity 2021 2021
Total Face Amount 700,000,000 700,000,000
Long-term Debt 699,500,000 [1] 699,400,000 [1]
Debt Instrument, Unamortized Discount 500,000 600,000
Imputed interest rate 4.89% 4.88%
$500 million 4.80% 2020 Senior Notes [Member]
 Ìý Ìý
Debt Instrument [Line Items] Ìý Ìý
Stated interest rate 4.80% Ìý
Type Fixed Fixed
Final Maturity 2020 2020
Total Face Amount 500,000,000 500,000,000
Long-term Debt 499,300,000 [2] 499,200,000 [2]
Debt Instrument, Unamortized Discount 700,000 800,000
Imputed interest rate 4.83% 4.83%
$800 Million 6.25% 2040 Senior Notes [Member]
 Ìý Ìý
Debt Instrument [Line Items] Ìý Ìý
Stated interest rate 6.25% Ìý
Type Fixed Fixed
Final Maturity 2040 2040
Total Face Amount 800,000,000 800,000,000
Long-term Debt 790,500,000 [3] 790,400,000 [3]
Debt Instrument, Unamortized Discount 9,500,000 9,600,000
Imputed interest rate 6.34% 6.34%
$400 Million 5.90% 2020 Senior Notes [Member]
 Ìý Ìý
Debt Instrument [Line Items] Ìý Ìý
Stated interest rate 5.90% Ìý
Type Fixed Fixed
Final Maturity 2020 2020
Total Face Amount 400,000,000 400,000,000
Long-term Debt 398,500,000 [4] 398,400,000 [4]
Debt Instrument, Unamortized Discount 1,500,000 1,600,000
Imputed interest rate 5.98% 5.98%
$500 Million 3.95% 2018 Senior Notes [Member]
 Ìý Ìý
Debt Instrument [Line Items] Ìý Ìý
Stated interest rate 3.95% Ìý
Type Fixed Fixed
Final Maturity 2018 2018
Total Face Amount 500,000,000.0 500,000,000.0
Long-term Debt 496,900,000 [5] 496,500,000 [5]
Debt Instrument, Unamortized Discount 3,100,000 3,500,000
Imputed interest rate 4.14% 4.14%
Revolving Credit Facility [Member]
 Ìý Ìý
Debt Instrument [Line Items] Ìý Ìý
Type Variable Variable
Final Maturity 2017 2017
Total Face Amount 1,750,000,000 1,750,000,000
Credit facility, amount outstanding 275,000,000 [6] 0 [6]
Letters of credit outstanding 5,200,000 8,400,000
Imputed interest rate 1.66% 1.64%
Credit facility remaining capacity 1,500,000,000 1,700,000,000
Equipment Loans [Member]
 Ìý Ìý
Debt Instrument [Line Items] Ìý Ìý
Type Fixed Fixed
Final Maturity 2020 2020
Total Face Amount 164,800,000 164,800,000
Long-term Debt 151,400,000 161,700,000
Short-term Debt [Member]
 Ìý Ìý
Debt Instrument [Line Items] Ìý Ìý
Final Maturity 2014/2015 Ìý
Total Face Amount 139,700,000 Ìý
Interest Rate Swap [Member]
 Ìý Ìý
Debt Instrument [Line Items] Ìý Ìý
Fair Value Adjustment to Interest Rate Hedge $ 3,300,000 $ (2,100,000)
[1] As of JuneÌý30, 2014 and DecemberÌý31, 2013, the $700 million 4.875 percent senior notes were recorded at a par value of $700 million less unamortized discounts of $0.5 million and $0.6 million, respectively, based on an imputed interest rate of 4.89 percent.
[2] As of JuneÌý30, 2014 and DecemberÌý31, 2013, the $500 million 4.80 percent senior notes were recorded at a par value of $500 million less unamortized discounts of $0.7 million and $0.8 million, respectively, based on an imputed interest rate of 4.83 percent.
[3] As of JuneÌý30, 2014 and DecemberÌý31, 2013, the $800 million 6.25 percent senior notes were recorded at a par value of $800 million less unamortized discounts of $9.5 million and $9.6 million, respectively, based on an imputed interest rate of 6.34 percent.
[4] As of JuneÌý30, 2014 and DecemberÌý31, 2013, the $400 million 5.90 percent senior notes were recorded at a par value of $400 million less unamortized discounts of $1.5 million and $1.6 million, respectively, based on an imputed interest rate of 5.98 percent.
[5] As of JuneÌý30, 2014 and DecemberÌý31, 2013, the $500 million 3.95 percent senior notes were recorded at a par value of $500 million less unamortized discounts of $3.1 million and $3.5 million, respectively, based on an imputed interest rate of 4.14 percent.
[6] As of JuneÌý30, 2014, $275.0 million of revolving loans were drawn under the credit facility. As of DecemberÌý31, 2013, no revolving loans were drawn under the credit facility. As of JuneÌý30, 2014 and DecemberÌý31, 2013, the principal amount of letter of credit obligations totaled $5.2 million and $8.4 million, respectively, thereby reducing available borrowing capacity to $1.5 billion and $1.7 billion for each period, respectively.