v2.4.0.6
Segment Disclosure and Related Information - Analysis of Results by Operating Segment (Detail) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Segment Information [Line Items]      
Sales and other operating revenues $ 65,756 $ 57,296 $ 48,828
Depreciation, Depletion, Amortization and Impairments, Total 7,336 8,250 8,876
Consolidated equity in earnings of affiliates 1,234 1,368 1,439
Provision for income taxes 8,770 7,863 4,917
Consolidated net income attributable to ConocoPhillips 12,436 11,358 4,414
Investments in and advances to affiliates 32,660 32,235 36,632
Consolidated capital expenditures and investments 12,244 8,611 8,400
Total assets 153,230 [1] 156,314 [1] 152,138
Interest income 170 135 166
Alaska [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 9,533 7,462 6,428
Depreciation, Depletion, Amortization and Impairments, Total 578 626 694
Consolidated equity in earnings of affiliates (77) 8 (38)
Provision for income taxes 1,171 1,017 823
Consolidated net income attributable to ConocoPhillips 1,984 1,727 1,534
Investments in and advances to affiliates 58 143 117
Consolidated capital expenditures and investments 774 729 810
Total assets 10,723 10,832 10,449
Lower 48 and Latin America Before Intersegment Eliminations [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 23,507 21,980 18,303
Intersegment Eliminations Before Lower 48 and Latin America [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues (283) (180) (150)
Lower 48 and Latin America [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 23,224 21,800 18,153
Depreciation, Depletion, Amortization and Impairments, Total 2,228 2,286 2,718
Consolidated equity in earnings of affiliates 99 80 32
Provision for income taxes 741 595 (37)
Consolidated net income attributable to ConocoPhillips 1,288 1,029 (73)
Investments in and advances to affiliates 1,168 1,190 1,184
Consolidated capital expenditures and investments 3,882 1,790 2,035
Total assets 25,872 24,213 25,098
Interest income 51 54 59
Canada Before Intersegment Eliminations [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 6,270 6,147 5,412
Intersegment Eliminations Before Canada [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues (944) (797) (703)
Canada [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 5,326 5,350 4,709
Depreciation, Depletion, Amortization and Impairments, Total 1,758 1,680 1,985
Consolidated equity in earnings of affiliates 677 505 344
Provision for income taxes (45) 215 (237)
Consolidated net income attributable to ConocoPhillips 91 2,902 (257)
Investments in and advances to affiliates 9,045 8,675 8,320
Consolidated capital expenditures and investments 1,761 1,356 1,176
Total assets 20,847 21,168 23,559
Interest and debt expense 122 140 156
Europe Before Intersegment Eliminations [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 17,119 12,819 11,852
Intersegment Eliminations Before Europe [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues (50) (17)  
Europe [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 17,069 12,802 11,852
Depreciation, Depletion, Amortization and Impairments, Total 1,405 2,049 2,111
Consolidated equity in earnings of affiliates 46 41 30
Provision for income taxes 4,459 3,118 2,272
Consolidated net income attributable to ConocoPhillips 1,830 1,703 1,119
Investments in and advances to affiliates 195 211 204
Consolidated capital expenditures and investments 2,222 1,190 1,144
Total assets 12,452 11,335 12,589
Asia Pacific and Middle East Before Intersegment Eliminations [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 8,665 7,161 5,463
Intersegment Eliminations Before Asia Pacific and Middle East [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues (1) (1)  
Asia Pacific and Middle East [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 8,664 7,160 5,463
Depreciation, Depletion, Amortization and Impairments, Total 1,063 1,329 1,050
Consolidated equity in earnings of affiliates 819 (17) (68)
Provision for income taxes 1,887 1,340 1,111
Consolidated net income attributable to ConocoPhillips 3,032 2,099 1,322
Investments in and advances to affiliates 11,571 11,335 9,145
Consolidated capital expenditures and investments 2,325 2,157 2,100
Total assets 22,374 21,853 20,206
Interest income 7 8 10
Other International [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 1,781 2,624 2,184
Depreciation, Depletion, Amortization and Impairments, Total 196 209 210
Consolidated equity in earnings of affiliates (329) (540) (73)
Provision for income taxes 709 1,451 1,173
Consolidated net income attributable to ConocoPhillips (94) (261) 20
Investments in and advances to affiliates 381 828 1,978
Consolidated capital expenditures and investments 1,038 1,203 1,001
Total assets 9,070 8,675 8,431
Interest income 18 19 22
LUKOIL Investment [Member]
      
Segment Information [Line Items]      
Depreciation, Depletion, Amortization and Impairments, Total         
Consolidated equity in earnings of affiliates   1,295 1,219
Provision for income taxes 123 505 12
Consolidated net income attributable to ConocoPhillips 239 2,513 1,219
Investments in and advances to affiliates     6,411
Consolidated capital expenditures and investments         
Total assets   1,129 6,416
Corporate and Other [Member]
      
Segment Information [Line Items]      
Sales and other operating revenues 159 98 39
Depreciation, Depletion, Amortization and Impairments, Total 108 71 108
Consolidated equity in earnings of affiliates (1) (4) (7)
Provision for income taxes (275) (378) (200)
Consolidated net income attributable to ConocoPhillips (976) (1,317) (1,161)
Investments in and advances to affiliates 9    
Consolidated capital expenditures and investments 242 186 134
Total assets 8,485 11,974 1,994
Discontinued operations [Member]
      
Segment Information [Line Items]      
Consolidated net income attributable to ConocoPhillips 5,042 963 691
Investments in and advances to affiliates 10,233 9,853 9,273
Total assets 43,407 45,135 43,396
Corporate [Member]
      
Segment Information [Line Items]      
Interest income 94 54 75
Interest and debt expense $ 832 $ 1,027 $ 1,111
[1] Certain amounts have been restated to reflect a prior period adjustment. See Note 21-Accumulated Other Comprehensive Income, in the Notes to Consolidated Financial Statements.