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)
 0 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Apr. 26, 2012
USD ($)
Apr. 30, 2012
USD ($)
Mar. 31, 2012
USD ($)
Dec. 31, 2011
USD ($)
Mar. 31, 2012
$325 Million Private Placement Senior Notes [Member]
USD ($)
Dec. 31, 2011
$325 Million Private Placement Senior Notes [Member]
USD ($)
Mar. 31, 2012
$1.25 Billion Term Loan [Member]
USD ($)
Dec. 31, 2011
$1.25 Billion Term Loan [Member]
USD ($)
Mar. 31, 2012
$700 Million 4.875% 2021 Senior Notes [Member]
USD ($)
Dec. 31, 2011
$700 Million 4.875% 2021 Senior Notes [Member]
USD ($)
Mar. 31, 2012
$1.3 Billion Senior Notes [Member]
USD ($)
Dec. 31, 2011
$1.3 Billion Senior Notes [Member]
USD ($)
Mar. 31, 2012
$500 Million 4.80% 2020 Senior Notes [Member]
USD ($)
Dec. 31, 2011
$500 Million 4.80% 2020 Senior Notes [Member]
USD ($)
Mar. 31, 2012
$800 Million 6.25% 2040 Senior Notes [Member]
USD ($)
Dec. 31, 2011
$800 Million 6.25% 2040 Senior Notes [Member]
USD ($)
Mar. 31, 2012
$400 Million 5.90% 2020 Senior Notes [Member]
USD ($)
Dec. 31, 2011
$400 Million 5.90% 2020 Senior Notes [Member]
USD ($)
Mar. 31, 2012
Series 2008A - Tranche A [Member]
USD ($)
Dec. 31, 2011
Series 2008A - Tranche A [Member]
USD ($)
Mar. 31, 2012
Series 2008A - Tranche B [Member]
USD ($)
Dec. 31, 2011
Series 2008A - Tranche B [Member]
USD ($)
Mar. 31, 2012
$1.75 Billion Credit Facility [Member]
USD ($)
Dec. 31, 2011
$1.75 Billion Credit Facility [Member]
USD ($)
Mar. 31, 2012
Revolving Loan [Member]
USD ($)
Dec. 31, 2011
Revolving Loan [Member]
USD ($)
Mar. 31, 2012
Short-Term Facilities [Member]
USD ($)
Mar. 31, 2012
Short-Term Facilities [Member]
AUD
Mar. 31, 2012
Letter Of Credit [Member]
USD ($)
Debt Instrument [Line Items]                                                          
Type             Variable Variable Fixed Fixed     Fixed Fixed Fixed Fixed Fixed Fixed Fixed Fixed Fixed Fixed     Variable Variable      
Average Annual Interest Rate             1.37% 1.40% 4.88% 4.88%     4.80% 4.80% 6.25% 6.25% 5.90% 5.90% 6.31% 6.31% 6.59% 6.59%              
Final Maturity             2016 2016 2021 2021     2020 2020 2040 2040 2020 2020 2013 2013 2015 2015     2016 2016      
Total Face Amount $ 1,750,000,000   $ 5,434,500,000 $ 5,447,000,000 $ 325,000,000 $ 325,000,000 $ 959,500,000 [1] $ 972,000,000 [1] $ 700,000,000 $ 700,000,000 $ 1,300,000,000 $ 1,300,000,000 $ 500,000,000 $ 500,000,000 $ 800,000,000 $ 800,000,000 $ 400,000,000 $ 400,000,000 $ 270,000,000 $ 270,000,000 $ 55,000,000 $ 55,000,000 $ 1,750,000,000 $ 1,750,000,000 $ 1,750,000,000 $ 1,750,000,000      
Total Long-term Debt     3,583,800,000 3,608,700,000     872,200,000 [1] 897,200,000 [1] 699,300,000 [2] 699,300,000 [2]     499,100,000 [3] 499,100,000 [3] 790,100,000 [4] 790,100,000 [4] 398,100,000 [5] 398,000,000 [5] 270,000,000 270,000,000 55,000,000 55,000,000        [6]        
Amount outstanding                                                 23,500,000 23,500,000 25,500,000 24,700,000 95,000,000
Credit facility, amount   1,750,000,000                                                   40,000,000  
Credit facility remaining capacity                                                 1,726,500,000 1,726,500,000 15,900,000 15,300,000  
Unamortized discount                 700,000 700,000       900,000 9,900,000 9,900,000 1,900,000 2,000,000                      
Current portion of term loan     87,200,000 74,800,000     87,200,000 74,800,000                                          
Imputed interest rate                 4.89%       4.83%   6.38%   5.98%                        
Amount of term loan paid down             290,500,000 278,000,000                                          
Proceeds from Long-term Lines of Credit 425,000,000                                                        
Debt maturities in 2012     62,300,000                                                    
Debt maturities in 2013     369,700,000                                                    
Debt maturities in 2014     124,600,000                                                    
Debt maturities in 2015     428,800,000                                                    
Debt maturities in 2016     299,100,000                                                    
Debt maturities after 2016     $ 2,400,000,000                                                    
[1] As of March 31, 2012 and December 31, 2011, $290.5 and $278.0 million, respectively, had been paid down on the original $1.25 billion term loan and of the remaining term loan $87.2 million and $74.8 million, respectively, was classified as Current portion of term loan. The current classification is 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 March 31, 2012 and December 31, 2011, the $700 million 4.88 percent senior notes were recorded at a par value of $700 million less unamortized discounts of $0.7 million in each period, respectively, based on an imputed interest rate of 4.89 percent.
[3] As of March 31, 2012 and December 31, 2011, the $500 million 4.80 percent senior notes were recorded at a par value of $500 million less unamortized discounts of $0.9 million in each period, respectively, based on an imputed interest rate of 4.83 percent.
[4] As of March 31, 2012 and December 31, 2011, the $800 million 6.25 percent senior notes were recorded at par value of $800 million less unamortized discounts of $9.9 million in each period, respectively, based on an imputed interest rate of 6.38 percent.
[5] As of March 31, 2012 and December 31, 2011, the $400 million 5.90 percent senior notes were recorded at a par value of $400 million less unamortized discounts of $1.9 million and $2.0 million, respectively, based on an imputed interest rate of 5.98 percent.
[6] As of March 31, 2012 and December 31, 2011, no revolving loans were drawn under the credit facility and the principal amount of letter of credit obligations totaled $23.5 million for each period respectively, thereby reducing available borrowing capacity to $1,726.5 million for each period, respectively. As of April 26, 2012, we had direct borrowings on our $1.75 billion credit facility in the amount of $425.0 million for purposes of funding general operations.