Annual report pursuant to Section 13 and 15(d)

GOODWILL AND OTHER INTANGIBLE ASSETS AND LIABILITIES (Schedule Of Finite-Lived Intangible Assets By Major Class) (Details)

v2.4.0.8
GOODWILL AND OTHER INTANGIBLE ASSETS AND LIABILITIES (Schedule Of Finite-Lived Intangible Assets By Major Class) (Details) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Finite-Lived Intangible Assets [Line Items]    
Definite lived intangible assets - Gross Carrying Amount $ 184.5 $ 196.5
Definite lived intangible assets - Accumulated Amortization (89.1) (67.5)
Definite lived intangible assets - Net Carrying Amount 95.4 129.0
Permits [Member] | Intangible Assets, Net [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Definite lived intangible assets - Gross Carrying Amount 127.4 136.1
Definite lived intangible assets - Accumulated Amortization (35.9) (31.7)
Definite lived intangible assets - Net Carrying Amount 91.5 104.4
Utility Contracts [Member] | Intangible Assets, Net [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Definite lived intangible assets - Gross Carrying Amount 54.7 54.7
Definite lived intangible assets - Accumulated Amortization (53.1) (32.4)
Definite lived intangible assets - Net Carrying Amount 1.6 22.3
Leases [Member] | Intangible Assets, Net [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Definite lived intangible assets - Gross Carrying Amount 2.4 5.7
Definite lived intangible assets - Accumulated Amortization (0.1) (3.4)
Definite lived intangible assets - Net Carrying Amount 2.3 2.3
Below Market Sales Contracts [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Definite lived intangible assets - Gross Carrying Amount (228.9) (296.7)
Definite lived intangible assets - Accumulated Amortization 159.7 181.6
Definite lived intangible assets - Net Carrying Amount (69.2) (115.1)
Below Market Sales Contracts [Member] | Other Current Liabilities [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Definite lived intangible assets - Gross Carrying Amount (23.0) (46.0)
Definite lived intangible assets - Accumulated Amortization      
Definite lived intangible assets - Net Carrying Amount (23.0) (46.0)
Below Market Sales Contracts [Member] | Other Liabilities [Member]
    
Finite-Lived Intangible Assets [Line Items]    
Definite lived intangible assets - Gross Carrying Amount (205.9) (250.7)
Definite lived intangible assets - Accumulated Amortization 159.7 181.6
Definite lived intangible assets - Net Carrying Amount $ (46.2) $ (69.1)