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Debt (Components Of Debt) (Details) (USD $)
In Millions, unless otherwise specified
 0 Months Ended 3 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 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. 15, 2011
Sep. 30, 2009
Jun. 30, 2011
Dec. 31, 2010
May 17, 2011
Revised Interest Rate Stated Percentage [Member]
11.25% Senior Notes Due February 1, 2019 [Member]
Jun. 30, 2011
Credit Facility Borrowings [Member]
Dec. 31, 2010
Credit Facility Borrowings [Member]
Jun. 30, 2011
5.625% Senior Notes Due January 15, 2012 [Member]
Dec. 31, 2010
5.625% Senior Notes Due January 15, 2012 [Member]
Jun. 30, 2011
4.95% Senior Notes Due April 1, 2014 [Member]
Dec. 31, 2010
4.95% Senior Notes Due April 1, 2014 [Member]
Jun. 30, 2011
5.50% Senior Notes Due May 15, 2015 [Member]
Jun. 30, 2010
5.50% Senior Notes Due May 15, 2015 [Member]
Dec. 31, 2010
5.50% Senior Notes Due May 15, 2015 [Member]
Jun. 30, 2011
8.60% Senior Notes Due August 15, 2016 [Member]
Dec. 31, 2010
8.60% Senior Notes Due August 15, 2016 [Member]
Jun. 30, 2011
6.125% Senior Notes Due January 15, 2017 [Member]
Jun. 30, 2010
6.125% Senior Notes Due January 15, 2017 [Member]
Dec. 31, 2010
6.125% Senior Notes Due January 15, 2017 [Member]
Jun. 30, 2011
7.25% Senior Notes Due May 15, 2018 [Member]
Dec. 31, 2010
7.25% Senior Notes Due May 15, 2018 [Member]
Jun. 01, 2011
7.25% Senior Notes Due May 15, 2018 [Member]
Jun. 30, 2011
11.25% Senior Notes Due February 1, 2019 [Member]
Jun. 30, 2010
11.25% Senior Notes Due February 1, 2019 [Member]
Dec. 31, 2010
11.25% Senior Notes Due February 1, 2019 [Member]
Jun. 30, 2011
7.625% Senior Notes Due June 15, 2020 [Member]
Dec. 31, 2010
7.625% Senior Notes Due June 15, 2020 [Member]
Jun. 30, 2011
8.875% Debentures Due April 15, 2021 [Member]
Dec. 31, 2010
8.875% Debentures Due April 15, 2021 [Member]
Jun. 30, 2011
6.625% Debentures Due April 15, 2029 [Member]
Dec. 31, 2010
6.625% Debentures Due April 15, 2029 [Member]
Jun. 30, 2011
8.820% Debentures Due April 15, 2031 [Member]
Dec. 31, 2010
8.820% Debentures Due April 15, 2031 [Member]
Jun. 30, 2011
Other, Including Capital Leases [Member]
Dec. 31, 2010
Other, Including Capital Leases [Member]
Credit facility borrowings           $ 475.0 $ 120.0                                                        
Senior notes               158.6 158.6 599.4 599.2 399.7   499.6 346.4 346.0 522.7   622.0 600.0           400.0 400.0                
Debentures                                             183.8 [1]   400.0 [1]     80.9 80.9 199.3 199.3 69.0 68.9    
Other, including capital leases                                                                   42.5 35.5
Total debt     4,077.3 3,530.0                                                              
Less: current portion     (649.6) (131.4)                                                              
Long-term debt     $ 3,427.7 $ 3,398.6                                                              
Interest rate 5.50% 4.95%     11.75%     5.625% 5.625% 4.95% 4.95% 5.50%   5.50% 8.60% 8.60% 6.125%   6.125% 7.25% 7.25% 7.25% 11.25%   11.25% 7.625% 7.625% 8.875% 8.875% 6.625% 6.625% 8.82% 8.82%    
Maturity date May 15, 2015 May 15, 2010 Jan. 15, 2012 Jan. 15, 2012 Apr. 01, 2014 Apr. 01, 2014 May 15, 2015 May 15, 2015 May 15, 2015 Aug. 15, 2016 Aug. 15, 2016 Jan. 15, 2017 Jan. 15, 2017 Jan. 15, 2017 May 15, 2018 May 15, 2018 Feb. 01, 2019 Feb. 01, 2019 Feb. 01, 2019 Jun. 15, 2020 Jun. 15, 2020 Apr. 15, 2021 Apr. 15, 2021 Apr. 15, 2029 Apr. 15, 2029 Apr. 15, 2031 Apr. 15, 2031
[1] On May 17, 2011, the interest rate on the 11.25% senior notes due February 1, 2019 was increased to 11.75%, as a result of a downgrades in the ratings of the notes by the rating agencies.