|
Segment Reporting (Details) (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
|
|
| Summarized financial information concerning our reportable segments | |||||||||||
| Gross Revenue | $ 9,742.8 | $ 9,686.0 | $ 9,819.0 | ||||||||
| Intercompany Revenue | (1,549.9) | (1,579.4) | (1,619.9) | ||||||||
| Net Revenue | 2,025.2 | 2,116.2 | 2,086.6 | 1,964.9 | 2,020.8 | 2,061.7 | 2,066.4 | 1,957.7 | 8,192.9 | 8,106.6 | 8,199.1 |
| Depreciation, amortization and depletion | 843.6 | 833.7 | 869.7 | ||||||||
| Operating (loss) income | 366.7 | 408.5 | 401.2 | 376.2 | 389.4 | 367.6 | 400.8 | 381.3 | 1,552.7 | 1,539.1 | 1,589.8 |
| Capital Expenditures | 936.5 | 794.7 | 826.3 | ||||||||
| Total Assets | 19,551.5 | 19,461.9 | 19,551.5 | 19,461.9 | 19,540.3 | ||||||
|
Reportable Segments [Member]
|
|||||||||||
| Summarized financial information concerning our reportable segments | |||||||||||
| Depreciation, amortization and depletion | 921.6 | 914.2 | 958.5 | ||||||||
|
Eastern [Member]
|
|||||||||||
| Summarized financial information concerning our reportable segments | |||||||||||
| Gross Revenue | 2,469.2 | 2,429.3 | 2,485.9 | ||||||||
| Intercompany Revenue | (366.1) | (353.8) | (370.9) | ||||||||
| Net Revenue | 2,103.1 | 2,075.5 | 2,115.0 | ||||||||
| Depreciation, amortization and depletion | 202.4 | 205.5 | 214.3 | ||||||||
| Operating (loss) income | 493.0 | 488.4 | 483.0 | ||||||||
| Capital Expenditures | 219.9 | 175.3 | 199.1 | ||||||||
| Total Assets | 4,457.0 | 4,437.1 | 4,457.0 | 4,437.1 | 4,495.1 | ||||||
|
Midwestern [Member]
|
|||||||||||
| Summarized financial information concerning our reportable segments | |||||||||||
| Gross Revenue | 2,197.4 | 2,167.4 | 2,185.4 | ||||||||
| Intercompany Revenue | (390.9) | (400.5) | (408.4) | ||||||||
| Net Revenue | 1,806.5 | 1,766.9 | 1,777.0 | ||||||||
| Depreciation, amortization and depletion | 206.5 | 203.6 | 225.9 | ||||||||
| Operating (loss) income | 375.9 | 402.0 | 367.3 | ||||||||
| Capital Expenditures | 218.0 | 210.7 | 208.7 | ||||||||
| Total Assets | 3,794.4 | 3,718.0 | 3,794.4 | 3,718.0 | 3,605.9 | ||||||
|
Southern [Member]
|
|||||||||||
| Summarized financial information concerning our reportable segments | |||||||||||
| Gross Revenue | 2,343.0 | 2,289.0 | 2,371.7 | ||||||||
| Intercompany Revenue | (313.1) | (311.7) | (325.5) | ||||||||
| Net Revenue | 2,029.9 | 1,977.3 | 2,046.2 | ||||||||
| Depreciation, amortization and depletion | 229.9 | 221.5 | 233.1 | ||||||||
| Operating (loss) income | 460.7 | 482.8 | 522.9 | ||||||||
| Capital Expenditures | 229.3 | 190.4 | 168.5 | ||||||||
| Total Assets | 4,907.7 | 4,869.7 | 4,907.7 | 4,869.7 | 4,867.6 | ||||||
|
Western [Member]
|
|||||||||||
| Summarized financial information concerning our reportable segments | |||||||||||
| Gross Revenue | 2,619.2 | 2,684.6 | 2,652.4 | ||||||||
| Intercompany Revenue | (463.5) | (496.0) | (482.4) | ||||||||
| Net Revenue | 2,155.7 | 2,188.6 | 2,170.0 | ||||||||
| Depreciation, amortization and depletion | 220.5 | 218.2 | 234.9 | ||||||||
| Operating (loss) income | 486.4 | 521.2 | 582.0 | ||||||||
| Capital Expenditures | 267.4 | 222.3 | 180.5 | ||||||||
| Total Assets | 5,539.0 | 5,518.5 | 5,539.0 | 5,518.5 | 5,461.2 | ||||||
|
Corporate entities [Member]
|
|||||||||||
| Summarized financial information concerning our reportable segments | |||||||||||
| Gross Revenue | 114.0 | 115.7 | 123.6 | ||||||||
| Intercompany Revenue | (16.3) | (17.4) | (32.7) | ||||||||
| Net Revenue | 97.7 | 98.3 | 90.9 | ||||||||
| Depreciation, amortization and depletion | 62.3 | 65.4 | 50.3 | ||||||||
| Operating (loss) income | (263.3) | (355.3) | (365.4) | ||||||||
| Capital Expenditures | 1.9 | (4.0) | 69.5 | ||||||||
| Total Assets | $ 853.4 | $ 918.6 | $ 853.4 | $ 918.6 | $ 1,110.5 | ||||||