v2.4.0.6
Condensed Consolidating Financial Statements (Details 3) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Dec. 31, 2011
Sep. 30, 2011
Jun. 30, 2011
Mar. 31, 2011
Dec. 31, 2010
Sep. 30, 2010
Jun. 30, 2010
Mar. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Cash (Used in) Provided by Operating Activities:                      
Net income $ 191.0 $ 193.6 $ 46.2 $ 158.1 $ 147.9 $ 134.5 $ 159.9 $ 65.2 $ 588.9 $ 507.5 $ 496.5
Other adjustments                 1,177.8 926.2 900.0
Cash (Used in) Provided by Operating Activities                 1,766.7 1,433.7 1,396.5
Cash (Used in) Provided by Investing Activities:                      
Purchases of property and equipment                 (936.5) (794.7) (826.3)
Proceeds from sales of property and equipment                 34.6 37.4 31.8
Cash used in business acquisitions and development projects, net of cash acquired                 (42.6) (58.9) (0.1)
Cash proceeds from divestitures, net of cash divested                 14.2 60.0 511.1
Change in restricted cash and marketable securities                 (16.8) 66.3 41.6
Other                 (3.1) (0.6) (0.6)
Cash used in investing activities                 (950.2) (690.5) (242.5)
Cash provided by (used in) financing activities:                      
Proceeds from notes payable and long-term debt                 1,416.4 1,193.5 1,472.6
Proceeds from issuance of senior notes, net of discount                 1,844.9 1,499.4 1,245.4
Payments of notes payable and long-term debt                 (3,224.5) (3,090.3) (3,583.9)
Premiums paid on extinguishment of debt                 (89.6) (30.4) (47.3)
Fees paid to issue and retire senior notes and certain hedging relationships                 (58.8) (26.2) (14.3)
Issuances of common stock                 40.7 86.5 39.6
Excess income tax benefit from stock option exercises                 2.5 3.5 2.5
Purchases of common stock for treasury                 (460.7) (43.1) (1.0)
Cash dividends paid                 (309.4) (294.6) (288.3)
Distributions paid to noncontrolling interests                   (1.2)  
Cash used in financing activities                 (838.5) (702.9) (1,174.7)
(Decrease) Increase in Cash and Cash Equivalents                 (22.0) 40.3 (20.7)
Cash and cash equivalents at beginning of period       88.3       48.0 88.3 48.0 68.7
Cash and cash equivalents at end of period 66.3       88.3       66.3 88.3 48.0
Parent Company [Member]
                      
Cash (Used in) Provided by Operating Activities:                      
Net income                 589.2 506.5 495.0
Equity in earnings of subsidiaries, net of taxes                 (940.2) (437.2) (472.8)
Other adjustments                 315.7 291.8 72.1
Cash (Used in) Provided by Operating Activities                 (35.3) 361.1 94.3
Cash (Used in) Provided by Investing Activities:                      
Purchases of property and equipment                     (15.0)
Change in restricted cash and marketable securities                 (12.1) 27.9 28.4
Change in investment and net advances to affiliate                 (589.9) (1,449.0) (464.3)
Cash used in investing activities                 (602.0) (1,421.1) (450.9)
Cash provided by (used in) financing activities:                      
Proceeds from notes payable and long-term debt                 1,416.4 1,193.5 1,378.6
Proceeds from issuance of senior notes, net of discount                 1,844.9 1,499.4 1,245.4
Payments of notes payable and long-term debt                 (1,844.1) (1,446.3) (1,969.3)
Premiums paid on extinguishment of debt                     (4.4)
Fees paid to issue and retire senior notes and certain hedging relationships                 (57.9) (26.2) (11.9)
Issuances of common stock                 40.7 86.5 39.6
Excess income tax benefit from stock option exercises                 2.5 3.5 2.5
Purchases of common stock for treasury                 (460.7) (43.1) (1.0)
Cash dividends paid                 (309.4) (294.6) (288.3)
Cash used in financing activities                 632.4 972.7 391.2
(Decrease) Increase in Cash and Cash Equivalents                 (4.9) (87.3) 34.6
Cash and cash equivalents at beginning of period       14.5       101.8 14.5 101.8 67.2
Cash and cash equivalents at end of period 9.6       14.5       9.6 14.5 101.8
Guarantors [Member]
                      
Cash (Used in) Provided by Operating Activities:                      
Net income                 906.9 423.2 470.2
Equity in earnings of subsidiaries, net of taxes                 (10.9) (18.6) (53.0)
Other adjustments                 856.1 616.4 770.5
Cash (Used in) Provided by Operating Activities                 1,752.1 1,021.0 1,187.7
Cash (Used in) Provided by Investing Activities:                      
Purchases of property and equipment                 (889.9) (736.9) (790.7)
Proceeds from sales of property and equipment                 34.6 37.4 31.8
Cash used in business acquisitions and development projects, net of cash acquired                 (42.6) (58.9) (0.1)
Cash proceeds from divestitures, net of cash divested                 14.2 60.0 511.1
Change in restricted cash and marketable securities                 (2.5) 37.0 17.4
Other                 (3.1) (0.6) (0.6)
Change in investment and net advances to affiliate                   (300.0) (8.0)
Cash used in investing activities                 (889.3) (962.0) (239.1)
Cash provided by (used in) financing activities:                      
Payments of notes payable and long-term debt                 (1,378.8) (1,342.4) (1,420.6)
Premiums paid on extinguishment of debt                 (89.6) (30.4) (42.9)
Fees paid to issue and retire senior notes and certain hedging relationships                 (0.9)   (2.4)
Change in investment and net advances from parent                 589.9 1,449.0 464.3
Cash used in financing activities                 (879.4) 76.2 (1,001.6)
(Decrease) Increase in Cash and Cash Equivalents                 (16.6) 135.2 (53.0)
Cash and cash equivalents at beginning of period       70.5       (64.7) 70.5 (64.7) (11.7)
Cash and cash equivalents at end of period 53.9       70.5       53.9 70.5 (64.7)
Non-Guarantors [Member]
                      
Cash (Used in) Provided by Operating Activities:                      
Net income                 47.3 37.0 63.1
Equity in earnings of subsidiaries, net of taxes                 (3.4) (3.4) (6.0)
Other adjustments                 6.0 18.0 57.4
Cash (Used in) Provided by Operating Activities                 49.9 51.6 114.5
Cash (Used in) Provided by Investing Activities:                      
Purchases of property and equipment                 (46.6) (57.8) (20.6)
Change in restricted cash and marketable securities                 (2.2) 1.4 (4.2)
Cash used in investing activities                 (48.8) (56.4) (24.8)
Cash provided by (used in) financing activities:                      
Proceeds from notes payable and long-term debt                     94.0
Payments of notes payable and long-term debt                 (1.6) (301.6) (194.0)
Distributions paid to noncontrolling interests                   (1.2)  
Change in investment and net advances from parent                   300.0 8.0
Cash used in financing activities                 (1.6) (2.8) (92.0)
(Decrease) Increase in Cash and Cash Equivalents                 (0.5) (7.6) (2.3)
Cash and cash equivalents at beginning of period       3.3       10.9 3.3 10.9 13.2
Cash and cash equivalents at end of period 2.8       3.3       2.8 3.3 10.9
Eliminations [Member]
                      
Cash (Used in) Provided by Operating Activities:                      
Net income                 (954.5) (459.2) (531.8)
Equity in earnings of subsidiaries, net of taxes                 954.5 459.2 531.8
Cash (Used in) Provided by Investing Activities:                      
Change in investment and net advances to affiliate                 589.9 1,749.0 472.3
Cash used in investing activities                 589.9 1,749.0 472.3
Cash provided by (used in) financing activities:                      
Change in investment and net advances from parent                 (589.9) (1,749.0) (472.3)
Cash used in financing activities                 (589.9) (1,749.0) (472.3)
Cash and cash equivalents at beginning of period       0       0 0 0 0
Cash and cash equivalents at end of period $ 0       $ 0       $ 0 $ 0 $ 0