XML 115 R52.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value Measurement (Unaudited) (Details) (USD $)
In Millions, unless otherwise specified
6 Months Ended
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude Oil Options [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude Oil Options [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude Oil Options [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude Oil Options [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude Oil Options [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper forward contracts [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper forward contracts [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper forward contracts [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper forward contracts [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Copper forward contracts [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Plains Offshore Warrants [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Plains Offshore Warrants [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Plains Offshore Warrants [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Plains Offshore Warrants [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Plains Offshore Warrants [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Money market funds [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
U.S. core fixed income fund [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Equity securities [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government mortgage-backed securities [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Corporate bonds [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Government bonds and notes [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Asset-backed securities [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Municipal bonds [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Embedded derivatives in provisional sales/purchases contracts [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude oil and natural gas swaps [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude oil and natural gas swaps [Member]
Estimate of Fair Value Measurement [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude oil and natural gas swaps [Member]
Fair Value, Inputs, Level 1 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude oil and natural gas swaps [Member]
Fair Value, Inputs, Level 2 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Crude oil and natural gas swaps [Member]
Fair Value, Inputs, Level 3 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fair Value, Measurements, Recurring [Member]
Copper futures and swap contracts [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Fair Value, Measurements, Recurring [Member]
Time Deposits [Member]
Carrying Amount, Fair Value Disclosure [Member]
Jun. 30, 2013
McMoRan Exploration Co [Member]
Dec. 31, 2012
McMoRan Exploration Co [Member]
Fair Value, Measurements, Recurring [Member]
Cost-method investments [Member]
Carrying Amount, Fair Value Disclosure [Member]
Dec. 31, 2012
McMoRan Exploration Co [Member]
Fair Value, Measurements, Recurring [Member]
Cost-method investments [Member]
Estimate of Fair Value Measurement [Member]
Dec. 31, 2012
McMoRan Exploration Co [Member]
Fair Value, Measurements, Recurring [Member]
Cost-method investments [Member]
Fair Value, Inputs, Level 1 [Member]
Dec. 31, 2012
McMoRan Exploration Co [Member]
Fair Value, Measurements, Recurring [Member]
Cost-method investments [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
McMoRan Exploration Co [Member]
Fair Value, Measurements, Recurring [Member]
Cost-method investments [Member]
Fair Value, Inputs, Level 3 [Member]
Jun. 30, 2013
Deferred Option Premiums and Accrued Interest [Member]
Investment securities (current and long-term):                                                                                                                                                                                                                                                                                                                      
Investment securities     $ 107 [1],[2],[3] $ 492 $ 107 [1],[2],[3] $ 585 $ 86 [1],[2],[3] $ 24 $ 21 [1],[2],[3] $ 561 $ 0 [1],[2],[3] $ 0                                                                       $ 80 [1],[2],[3] $ 16 [1],[2] $ 80 [1],[2],[3] $ 16 [1],[2] $ 80 [1],[2],[3] $ 16 [1],[2] $ 0 [1],[2],[3] $ 0 [1],[2] $ 0 [1],[2],[3] $ 0 [1],[2] $ 21 [1],[2],[3] $ 22 [1],[2] $ 21 [1],[2],[3] $ 22 [1],[2] $ 0 [1],[2],[3] $ 0 [1],[2] $ 21 [1],[2],[3] $ 22 [1],[2] $ 0 [1],[2],[3] $ 0 [1],[2] $ 6 [1],[2],[3] $ 8 [1],[2] $ 6 [1],[2],[3] $ 8 [1],[2] $ 6 [1],[2],[3] $ 8 [1],[2] $ 0 [1],[2],[3] $ 0 [1],[2] $ 0 [1],[2],[3] $ 0 [1],[2]                                                                                                                                             $ 238 [1],[4]   $ 446 [5] $ 539 [5] $ 0 [5] $ 539 [5] $ 0 [5]  
Trust assets (long-term):                                                                                                                                                                                                                                                                                                                      
Trust assets     157 [1],[2] 163 [1],[2] 157 [1],[2] 163 [1],[2] 8 [1],[2] 7 [1],[2] 149 [1],[2] 156 [1],[2] 0 [1],[2] 0 [1],[2]                                                                       8 [1],[2] 7 [1],[2] 8 [1],[2] 7 [1],[2] 8 [1],[2] 7 [1],[2] 0 [1],[2] 0 [1],[2] 0 [1],[2] 0 [1],[2] 48 [1],[2] 50 [1],[2] 48 [1],[2] 50 [1],[2] 0 [1],[2] 0 [1],[2] 48 [1],[2] 50 [1],[2] 0 [1],[2] 0 [1],[2]                     37 [1],[2] 36 [1],[2] 37 [1],[2] 36 [1],[2] 0 [1],[2] 0 [1],[2] 37 [1],[2] 36 [1],[2] 0 [1],[2] 0 [1],[2] 26 [1],[2] 30 [1],[2] 26 [1],[2] 30 [1],[2] 0 [1],[2] 0 [1],[2] 26 [1],[2] 30 [1],[2] 0 [1],[2] 0 [1],[2] 21 [1],[2] 24 [1],[2] 21 [1],[2] 24 [1],[2] 0 [1],[2] 0 [1],[2] 21 [1],[2] 24 [1],[2] 0 [1],[2] 0 [1],[2] 16 [1],[2] 15 [1],[2] 16 [1],[2] 15 [1],[2] 0 [1],[2] 0 [1],[2] 16 [1],[2] 15 [1],[2] 0 [1],[2] 0 [1],[2] 1 [1],[2] 1 [1],[2] 1 [1],[2] 1 [1],[2] 0 [1],[2] 0 [1],[2] 1 [1],[2] 1 [1],[2] 0 [1],[2] 0 [1],[2]                                                        
Derivatives:                                                                                                                                                                                                                                                                                                                      
Derivative assets 61 33 92 [1],[4] 41 [1],[4] 92 [1],[4] 41 [1],[4] 0 [1],[4] 5 [1],[4] 92 [1],[4] 36 [1],[4] 0 [1],[4] 0 [1],[4]                                                                                                                                                                                                                                       11 [1],[4] 36 [1],[4] 11 [1],[4] 36 [1],[4] 0 [1],[4] 0 [1],[4] 11 [1],[4] 36 [1],[4] 0 [1],[4] 0 [1],[4] 81 [1],[4] 81 [1],[4] 0 [1],[4] 81 [1],[4] 0 [1],[4] 5 [1],[4] 5 [1],[4] 5 [1],[4] 0 [1],[4] 0 [1],[4]                
Total assets         356 789 94 36 262 753 0 0                                                                                                                                                                                                                                                                                              
Derivatives:                                                                                                                                                                                                                                                                                                                      
Derivative liabilities 223 20 333 [1] 28 [1],[4] 333 [1] 28 [1],[4] 15 [1] 1 [1],[4] 123 [1] 27 [1],[4] 195 [1] 0 [1],[4] 121 [1],[4] 27 [1],[4] 121 [1],[4] 27 [1],[4] 0 [1],[4] 0 [1],[4] 121 [1],[4] 27 [1],[4] 0 [1],[4] 0 [1],[4] 116 [1],[4] 116 [1],[4] 0 [1],[4] 0 [1],[4] 116 [1],[4] 14 [1],[4] 1 [1],[4] 14 [1],[4] 1 [1],[4] 13 [1],[4] 1 [1],[4] 1 [1],[4] 0 [1],[4] 0 [1],[4] 0 [1],[4] 3 [1],[4] 3 [1],[4] 2 [1],[4] 1 [1],[4] 0 [1],[4] 79 [1],[6] 79 [1],[6] 0 [1],[6] 0 [1],[6] 79 [1],[6]                                                                                                                                                                                                                       478
Long-term debt, including current portion     21,215 [7] 3,527 [7] 20,335 [7] 3,589 [7] 0 [7] 0 [7] 20,335 [7] 3,589 [7] 0 [7] 0 [7]                                                                                                                                                                                                                                                                                              
Total liabilities         $ 20,668 $ 3,617 $ 15 $ 1 $ 20,458 $ 3,616 $ 195 $ 0                                                                                                                                                                                                                                                                                              
Preferred Stock, Dividend Rate, Percentage                                                                                                                                                                                                                                                                                                         5.80%            
[1] Recorded at fair value.
[2] Current portion included in other current assets and long-term portion included in other assets.
[3] Investment securities excluded $238 million of time deposits at June 30, 2013.
[4] Crude oil options are net of $478 million for deferred premiums and accrued interest at June 30, 2013. Refer to Note 9 for further discussion and balance sheet classifications.
[5] Recorded at cost and included in other assets.
[6] Included in other liabilities. Refer to Note 2 for further discussion.
[7] Recorded at cost except for debt acquired in the PXP, MMR and FMC acquisitions, which were recorded at fair value at the acquisition dates.