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Investments in Unconsolidated Affiliates (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2013
Neptune Pipeline Company, LLC [Member]
Dec. 31, 2013
NGL Pipelines & Services [Member]
Dec. 31, 2012
NGL Pipelines & Services [Member]
Dec. 31, 2011
NGL Pipelines & Services [Member]
Dec. 31, 2013
NGL Pipelines & Services [Member]
Venice Energy Service Company LLC [Member]
Dec. 31, 2012
NGL Pipelines & Services [Member]
Venice Energy Service Company LLC [Member]
Dec. 31, 2013
NGL Pipelines & Services [Member]
K/D/S Promix, LLC [Member]
Dec. 31, 2012
NGL Pipelines & Services [Member]
K/D/S Promix, LLC [Member]
Dec. 31, 2013
NGL Pipelines & Services [Member]
Baton Rouge Fractionators LLC [Member]
Dec. 31, 2012
NGL Pipelines & Services [Member]
Baton Rouge Fractionators LLC [Member]
Dec. 31, 2013
NGL Pipelines & Services [Member]
Skelly-Belvieu Pipeline Company, LLC [Member]
Dec. 31, 2012
NGL Pipelines & Services [Member]
Skelly-Belvieu Pipeline Company, LLC [Member]
Dec. 31, 2013
NGL Pipelines & Services [Member]
Texas Express Pipeline LLC [Member]
Dec. 31, 2012
NGL Pipelines & Services [Member]
Texas Express Pipeline LLC [Member]
Dec. 31, 2013
NGL Pipelines & Services [Member]
Texas Express Gathering LLC [Member]
Dec. 31, 2012
NGL Pipelines & Services [Member]
Texas Express Gathering LLC [Member]
Dec. 31, 2013
NGL Pipelines & Services [Member]
Front Range Pipeline LLC [Member]
Dec. 31, 2012
NGL Pipelines & Services [Member]
Front Range Pipeline LLC [Member]
Dec. 31, 2013
Onshore Natural Gas Pipelines & Services [Member]
Dec. 31, 2012
Onshore Natural Gas Pipelines & Services [Member]
Dec. 31, 2011
Onshore Natural Gas Pipelines & Services [Member]
Dec. 31, 2013
Onshore Natural Gas Pipelines & Services [Member]
White River Hub, LLC [Member]
Dec. 31, 2012
Onshore Natural Gas Pipelines & Services [Member]
White River Hub, LLC [Member]
Dec. 31, 2013
Onshore Crude Oil Pipelines & Services [Member]
Dec. 31, 2012
Onshore Crude Oil Pipelines & Services [Member]
Dec. 31, 2011
Onshore Crude Oil Pipelines & Services [Member]
Dec. 31, 2013
Onshore Crude Oil Pipelines & Services [Member]
Seaway Crude Pipeline Company LLC [Member]
Dec. 31, 2012
Onshore Crude Oil Pipelines & Services [Member]
Seaway Crude Pipeline Company LLC [Member]
Dec. 31, 2013
Onshore Crude Oil Pipelines & Services [Member]
Eagle Ford Pipeline LLC [Member]
Dec. 31, 2012
Onshore Crude Oil Pipelines & Services [Member]
Eagle Ford Pipeline LLC [Member]
Dec. 31, 2013
Offshore Pipelines & Services [Member]
Dec. 31, 2012
Offshore Pipelines & Services [Member]
Dec. 31, 2011
Offshore Pipelines & Services [Member]
Dec. 31, 2013
Offshore Pipelines & Services [Member]
Poseidon Oil Pipeline Company, LLC [Member]
Dec. 31, 2012
Offshore Pipelines & Services [Member]
Poseidon Oil Pipeline Company, LLC [Member]
Dec. 31, 2013
Offshore Pipelines & Services [Member]
Cameron Highway Oil Pipeline Company [Member]
Dec. 31, 2012
Offshore Pipelines & Services [Member]
Cameron Highway Oil Pipeline Company [Member]
Dec. 31, 2013
Offshore Pipelines & Services [Member]
Deepwater Gateway LLC [Member]
Dec. 31, 2012
Offshore Pipelines & Services [Member]
Deepwater Gateway LLC [Member]
Dec. 31, 2013
Offshore Pipelines & Services [Member]
Neptune Pipeline Company, LLC [Member]
Dec. 31, 2012
Offshore Pipelines & Services [Member]
Neptune Pipeline Company, LLC [Member]
Dec. 31, 2013
Offshore Pipelines & Services [Member]
Southeast Keathley Canyon Pipeline Company, LLC [Member]
Dec. 31, 2012
Offshore Pipelines & Services [Member]
Southeast Keathley Canyon Pipeline Company, LLC [Member]
Dec. 31, 2013
Petrochemical & Refined Products Services [Member]
Dec. 31, 2012
Petrochemical & Refined Products Services [Member]
Dec. 31, 2011
Petrochemical & Refined Products Services [Member]
Dec. 31, 2013
Petrochemical & Refined Products Services [Member]
Baton Rouge Propylene Concentrator, LLC [Member]
Dec. 31, 2012
Petrochemical & Refined Products Services [Member]
Baton Rouge Propylene Concentrator, LLC [Member]
Dec. 31, 2013
Petrochemical & Refined Products Services [Member]
Centennial Pipeline LLC [Member]
Dec. 31, 2012
Petrochemical & Refined Products Services [Member]
Centennial Pipeline LLC [Member]
Dec. 31, 2013
Petrochemical & Refined Products Services [Member]
Other Unconsolidated Affiliates [Member]
Dec. 31, 2012
Petrochemical & Refined Products Services [Member]
Other Unconsolidated Affiliates [Member]
Dec. 31, 2013
Other Investment [Member]
Dec. 31, 2012
Other Investment [Member]
Dec. 31, 2011
Other Investment [Member]
Jan. 18, 2012
Other Investment [Member]
Energy Transfer Equity [Member]
Apr. 27, 2012
Other Investment [Member]
Energy Transfer Equity [Member]
Dec. 31, 2012
Other Investment [Member]
Energy Transfer Equity [Member]
Dec. 31, 2011
Other Investment [Member]
Energy Transfer Equity [Member]
Schedule of Equity Method Investments [Line Items]                                                                                                                            
Ownership Interest (in hundredths)               13.10%   50.00%   32.20%   50.00%   35.00%   45.00%   33.30%         50.00%         50.00%   50.00%         36.00%   50.00%   50.00%   25.70%   50.00%         30.00%   50.00%                   13.10%
Investments in unconsolidated affiliates $ 2,437.1 $ 1,394.6           $ 27.6 $ 29.6 $ 45.4 $ 46.9 $ 19.5 $ 20.2 $ 40.8 $ 38.2 $ 339.9 $ 144.4 $ 37.8 $ 20.9 $ 134.5 $ 24.4       $ 24.2 $ 24.9       $ 940.7 $ 341.4 $ 224.5 $ 152.4       $ 41.7 $ 47.3 $ 207.7 $ 220.0 $ 84.5 $ 90.0 $ 38.7 $ 46.8 $ 159.2 $ 74.9       $ 7.6 $ 8.5 $ 60.1 $ 60.8 $ 2.7 [1] $ 3.0 [1]              
Non-cash asset impairment charges 92.6 63.4 27.8 4.8 30.6 16.3 11.3                             0 29.2 10.4     30.1 10.6 0         18.0 4.0 5.5                     18.7 3.3 0.6                          
Equity in income (loss) of unconsolidated affiliates by business segment [Abstract]                                                                                                                            
Equity in income of unconsolidated affiliates 167.3 64.3 46.4   15.7 15.9 21.8                             3.8 4.4 5.5     140.3 32.6 (4.1)         29.8 26.9 27.1                     (22.3) [2] (17.9) [2] (18.7) [2]             0 [3] 2.4 [3] 14.8 [3]        
Unamortized excess cost amounts by business segment [Abstract]                                                                                                                            
Unamortized excess cost amounts 58.1 63.7     27.7 28.9                                         17.8 18.5           10.0 13.6                       2.6 2.7                            
Equity method investment amortization of excess cost 3.3 3.4 34.5   1.2 1.0 1.0                                       0.7 0.7 0.7         1.3 1.2 1.2                     0.1 0.2 0.1             0 [4] 0.3 [4] 31.5 [4]        
Forecasted amortization of excess cost amounts - 2014 3.2                                                                                                                          
Forecasted amortization of excess cost amounts - 2015 3.2                                                                                                                          
Forecasted amortization of excess cost amounts - 2016 3.2                                                                                                                          
Forecasted amortization of excess cost amounts - 2017 3.2                                                                                                                          
Forecasted amortization of excess cost amounts - 2018 3.2                                                                                                                          
Percentage exceeded on ownership interests (in hundredths)                                                                                                                           3.00%
Number of Energy Transfer Equity common units sold (in units)                                                                                                                     22,762,636     9,672,576
Proceeds from the sale of Energy Transfer Equity common units                                                                                                                     825.1     375.2
Gain on the sale of Energy Transfer Equity common units                                                                                                                           27.2
Number of common units owned accounted for under equity method (in units)                                                                                                                           29,303,514
Percentage reduced on ownership interests (in hundredths)                                                                                                                     3.00%      
Investment in equity securities - available-for-sale                                                                                                                            
Number of Energy Transfer Equity common units sold (in units)                                                                                                                       6,540,878    
Proceeds from the sale of available-for-sale securities                                                                                                                       270.2    
Gain on sales of Energy Transfer Equity common units                                                                                                                         68.8  
Summarized balance sheet information of unconsolidated affiliates:                                                                                                                            
Current assets 266.6 254.7                                                                                                                        
Property, plant and equipment, net 5,735.6 2,911.3                                                                                                                        
Other assets 24.9 3.2                                                                                                                        
Total assets 6,027.1 3,169.2                                                                                                                        
Current liabilities 494.6 276.3                                                                                                                        
Other liabilities 309.0 272.1                                                                                                                        
Combined equity 5,223.5 2,620.8                                                                                                                        
Total liabilities and combined equity 6,027.1 3,169.2                                                                                                                        
Summarized income statement information of unconsolidated affiliates [Abstract]                                                                                                                            
Revenues 947.4 670.1 9,119.9                                                                                                                      
Operating income 423.9 213.7 1,393.4                                                                                                                      
Net income $ 382.6 $ 174.9 $ 458.1                                                                                                                      
[1] Other unconsolidated affiliates include a 50% interest in a propylene pipeline extending from Mont Belvieu, Texas to La Porte, Texas and a 25% interest in a company that provides logistics communications solutions between petroleum pipelines and their customers.
[2] Losses are primarily attributable to our investment in Centennial. As a result of a trend in declining earnings, we estimated the fair value of this equity-method investment during each of the last three fiscal years. Our estimates, based on a combination of the market and income approaches, indicate that the fair value of this investment remains substantially in excess of its carrying value.
[3] With respect to the year ended December 31, 2012, the amount presented reflects our equity in the income of Energy Transfer Equity from January 1, 2012 to January 18, 2012.
[4] Reflects amortization of excess cost amounts related to our investment in Energy Transfer Equity through January 18, 2012, which is the date we ceased using the equity method to account for this investment.