XML 94 R45.htm IDEA: XBRL DOCUMENT v2.4.0.8
Derivative Instruments, Hedging Activities and Fair Value Measurements (Details) (USD $)
In Millions, unless otherwise specified
 1 Months Ended 12 Months Ended 6 Months Ended 1 Months Ended 6 Months Ended
Mar. 31, 2013
Interest rate derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Forward Starting Swaps [Member]
Feb. 29, 2012
Interest rate derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Forward Starting Swaps [Member]
Dec. 31, 2012
Interest rate derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Forward Starting Swaps [Member]
Jun. 30, 2013
Interest rate derivatives [Member]
Derivatives in fair value hedging relationships [Member]
Senior Notes AA [Member]
Feb. 29, 2012
Interest rate derivatives [Member]
Derivatives in fair value hedging relationships [Member]
Interest Rate Swap [Member]
Jun. 30, 2013
Interest rate derivatives [Member]
Derivatives in mark-to-market relationships [Member]
Undesignated Swaps [Member]
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Octane enhancement: Forecasted purchases of NGLs [Member]
MMBbls
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Octane enhancement: Forecasted sales of octane enhancement products [Member]
MMBbls
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Natural gas marketing: Forecasted sales of natural gas [Member]
ft3
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
NGL marketing: Forecasted purchases of NGLs and related hydrocarbon products [Member]
MMBbls
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
NGL marketing: Forecasted sales of NGLs and related hydrocarbon products [Member]
MMBbls
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Refined products marketing: Forecasted purchases of refined products [Member]
MMBbls
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Refined products marketing: Forecasted sales of refined products [Member]
MMBbls
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Crude oil marketing: Forecasted purchases of crude oil [Member]
MMBbls
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in cash flow hedging relationships [Member]
Crude oil marketing: Forecasted sales of crude oil [Member]
MMBbls
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in fair value hedging relationships [Member]
Natural gas marketing: Natural gas storage inventory management activities [Member]
ft3
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in mark-to-market relationships [Member]
Natural gas risk management activities [Member]
ft3
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in mark-to-market relationships [Member]
Refined products risk management activities [Member]
MMBbls
Jun. 30, 2013
Commodity derivatives [Member]
Derivatives in mark-to-market relationships [Member]
Crude oil risk management activities [Member]
MMBbls
Derivative [Line Items]                                      
Number of Derivatives Outstanding     16 10   6                          
Type of Derivatives Outstanding     Forward starting swaps fixed-to-floating   floating-to-fixed                          
Notional Amount     $ 1,000.0 $ 750.0   $ 600.0                          
Period of Hedge       1/2011 to 2/2016   5/2010 to 7/2014                          
Rate Swap, fixed rate (in hundredths)       3.20%   2.00%                          
Rate Swap, floating rate (in hundredths)       1.30%   0.30%                          
Current Volume             1.1 [1],[2] 2.2 [1],[2] 2,300,000,000.0 [1],[2] 3.3 [1],[2] 7.1 [1],[2] 0.1 [1],[2] 0.1 [1],[2] 2.6 [1],[2] 3.0 [1],[2] 10,000,000,000.0 [1],[2] 145,700,000,000.0 [1],[2],[3],[4] 0.5 [1],[2],[3] 8.5 [1],[2],[3]
Long Term Volume               0.1 [1],[2]                 24,000,000,000.0 [1],[2],[3],[4]    
Number of derivative instruments settled 16 10     11                            
Notional amount of settled derivative instruments 1,000.0 500.0     800.0                            
Loss (gain) recognized due to settlement of derivative instruments         (37.7)                            
Accumulated other comprehensive income (loss) related to interest rate derivative instruments $ (168.8) $ (115.3)                                  
Current natural gas hedging volumes designated as an index plus or minus a discount                                 63,900,000,000    
Long-term natural gas hedging volumes designated as an index plus or minus a discount                                 1,200,000,000    
[1] The maximum term for derivatives designated as cash flow hedges, derivatives designated as fair value hedges and derivatives not designated as hedging instruments is January 2015, February 2014 and March 2016, respectively.
[2] Volume for derivatives designated as hedging instruments reflects the total amount of volumes hedged whereas volume for derivatives not designated as hedging instruments reflects the absolute value of derivative notional volumes.
[3] Reflects the use of derivative instruments to manage risks associated with transportation, processing and storage assets.
[4] Current and long-term volumes include 63.9 Bcf and 1.2 Bcf, respectively, of physical derivative instruments that are predominantly priced at a marked-based index plus a premium or minus a discount related to location differences.