v2.4.0.6
Supplementary Information - Condensed Consolidated Statement of Cash Flows (Detail) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Cash Flows From Operating Activities      
Net cash provided by (used in) continuing operating activities $ 14,477 $ 14,453 $ 11,383
Net cash provided by (used in) discontinued operations 5,169 2,592 1,096
Net Cash Provided by (Used in) Operating Activities 19,646 17,045 12,479
Cash Flows From Investing Activities      
Capital expenditures and investments (12,244) (8,611) (8,400)
Proceeds from asset dispositions 2,192 14,710 512
Net purchases of short-term investments 400 (982)  
Long-term advances/loans-related parties (9) (113) (175)
Collection of advances/loans-related parties 98 95 92
Other 56 218 9
Net cash provided by (used in) continuing investing activities (9,507) 5,317 (7,962)
Net cash provided by (used in) discontinued operations 2,492 (652) (1,973)
Net Cash Provided by (Used in) Investing Activities (7,015) 4,665 (9,935)
Cash Flows From Financing Activities      
Issuance of debt   118 9,087
Repayment of debt (934) (5,294) (7,833)
Issuance of company common stock 96 133 13
Repurchase of company common stock (11,123) (3,866)  
Dividends paid on common stock (3,632) (3,175) (2,832)
Other (684) (706) (1,261)
Net cash provided by (used in) continuing financing activities (16,277) (12,790) (2,826)
Net cash provided by (used in) discontinued operations (28) (29) (29)
Net Cash Provided by (Used in) Financing Activities (16,305) (12,819) (2,855)
Effect of Exchange Rate Changes on Cash and Cash Equivalents   21 98
Net Change in Cash and Cash Equivalents (3,674) 8,912 (213)
Cash and cash equivalents at beginning of year 9,454 [1] 542 755
Cash and Cash Equivalents at End of Year 5,780 [1] 9,454 [1] 542
ConocoPhillips [Member]
     
Cash Flows From Operating Activities      
Net cash provided by (used in) continuing operating activities 14,669 7,901 (2,205)
Net Cash Provided by (Used in) Operating Activities 14,669 7,901 (2,205)
Cash Flows From Financing Activities      
Issuance of debt     8,909
Repayment of debt   (990) (3,826)
Issuance of company common stock 96 133 13
Repurchase of company common stock (11,123) (3,866)  
Dividends paid on common stock (3,633) (3,175) (2,832)
Other (9) (3) (59)
Net cash provided by (used in) continuing financing activities (14,669) (7,901) 2,205
Net Cash Provided by (Used in) Financing Activities (14,669) (7,901) 2,205
ConocoPhillips Company [Member]
     
Cash Flows From Operating Activities      
Net cash provided by (used in) continuing operating activities (1,805) 1,962 5,181
Net cash provided by (used in) discontinued operations (2,359) 349 1,270
Net Cash Provided by (Used in) Operating Activities (4,164) 2,311 6,451
Cash Flows From Investing Activities      
Capital expenditures and investments (1,504) (1,120) (1,890)
Proceeds from asset dispositions 318 789 314
Long-term advances/loans-related parties (916) (135) (75)
Collection of advances/loans-related parties 993 87 168
Other 6 28  
Net cash provided by (used in) continuing investing activities (1,103) (351) (1,483)
Net cash provided by (used in) discontinued operations 2,376 (931) (1,256)
Net Cash Provided by (Used in) Investing Activities 1,273 (1,282) (2,739)
Cash Flows From Financing Activities      
Issuance of debt 12,758 2,159 3,122
Repayment of debt (8,657) (2,642) (6,727)
Other 119 52 18
Net cash provided by (used in) continuing financing activities 4,220 (431) (3,587)
Net cash provided by (used in) discontinued operations (18) (18) (11)
Net Cash Provided by (Used in) Financing Activities 4,202 (449) (3,598)
Effect of Exchange Rate Changes on Cash and Cash Equivalents (1) 16  
Net Change in Cash and Cash Equivalents 1,310 596 114
Cash and cash equivalents at beginning of year 718 122 8
Cash and Cash Equivalents at End of Year 2,028 718 122
ConocoPhillips Australia Funding Company [Member]
     
Cash Flows From Operating Activities      
Net cash provided by (used in) continuing operating activities 1     
Net cash provided by (used in) discontinued operations       
Net Cash Provided by (Used in) Operating Activities 1     
Cash Flows From Investing Activities      
Proceeds from asset dispositions       
Net purchases of short-term investments       
Long-term advances/loans-related parties       
Collection of advances/loans-related parties     950
Net cash provided by (used in) continuing investing activities      950
Net Cash Provided by (Used in) Investing Activities     950
Cash Flows From Financing Activities      
Issuance of debt       
Repayment of debt     (950)
Dividends paid on common stock       
Net cash provided by (used in) continuing financing activities     (950)
Net Cash Provided by (Used in) Financing Activities     (950)
Net Change in Cash and Cash Equivalents 1    
Cash and Cash Equivalents at End of Year 1    
ConocoPhillips Canada Funding Company I [Member]
     
Cash Flows From Operating Activities      
Net cash provided by (used in) continuing operating activities 13 11 8
Net Cash Provided by (Used in) Operating Activities 13 11 8
Cash Flows From Investing Activities      
Long-term advances/loans-related parties (4)    
Net cash provided by (used in) continuing investing activities (4)    
Net Cash Provided by (Used in) Investing Activities (4)    
Cash Flows From Financing Activities      
Net Change in Cash and Cash Equivalents 9 11 8
Cash and cash equivalents at beginning of year 29 18 10
Cash and Cash Equivalents at End of Year 37 29 18
ConocoPhillips Canada Funding Company II [Member]
     
Cash Flows From Operating Activities      
Net cash provided by (used in) continuing operating activities (7) (3)   
Net cash provided by (used in) discontinued operations       
Net Cash Provided by (Used in) Operating Activities (7) (3)   
Cash Flows From Investing Activities      
Capital expenditures and investments       
Proceeds from asset dispositions       
Long-term advances/loans-related parties       
Collection of advances/loans-related parties   384   
Other       
Net cash provided by (used in) continuing investing activities   384  
Net Cash Provided by (Used in) Investing Activities   384  
Cash Flows From Financing Activities      
Issuance of debt 4    
Repayment of debt   (378)   
Issuance of company common stock       
Dividends paid on common stock       
Net cash provided by (used in) continuing financing activities 4 (378)  
Net Cash Provided by (Used in) Financing Activities 4 (378)  
Effect of Exchange Rate Changes on Cash and Cash Equivalents       
Net Change in Cash and Cash Equivalents (3) 3   
Cash and cash equivalents at beginning of year 4 1 1
Cash and Cash Equivalents at End of Year 1 4 1
All Other Subsidiaries [Member]
     
Cash Flows From Operating Activities      
Net cash provided by (used in) continuing operating activities 4,950 7,095 10,483
Net cash provided by (used in) discontinued operations 7,528 2,243 (174)
Net Cash Provided by (Used in) Operating Activities 12,478 9,338 10,309
Cash Flows From Investing Activities      
Capital expenditures and investments (10,740) (7,814) (7,190)
Proceeds from asset dispositions 1,874 14,020 517
Net purchases of short-term investments 400 (982)  
Long-term advances/loans-related parties (4,562) (2,279) (3,312)
Collection of advances/loans-related parties 8,340 1,379 6,438
Other 50 190 9
Net cash provided by (used in) continuing investing activities (4,638) 4,514 (3,538)
Net cash provided by (used in) discontinued operations (8,084) 279 (717)
Net Cash Provided by (Used in) Investing Activities (12,722) 4,793 (4,255)
Cash Flows From Financing Activities      
Issuance of debt 827 260 269
Repayment of debt (1,426) (3,039) (3,794)
Dividends paid on common stock (3,051) (2,666) (1,945)
Other (794) (782) (1,179)
Net cash provided by (used in) continuing financing activities (4,444) (6,227) (6,649)
Net cash provided by (used in) discontinued operations (304) 240 301
Net Cash Provided by (Used in) Financing Activities (4,748) (5,987) (6,348)
Effect of Exchange Rate Changes on Cash and Cash Equivalents 1 5 98
Net Change in Cash and Cash Equivalents (4,991) 8,149 (196)
Cash and cash equivalents at beginning of year 8,703 554 750
Cash and Cash Equivalents at End of Year 3,713 8,703 554
Consolidating Adjustments [Member]
     
Cash Flows From Operating Activities      
Net cash provided by (used in) continuing operating activities (3,344) (2,513) (2,084)
Net Cash Provided by (Used in) Operating Activities (3,344) (2,513) (2,084)
Cash Flows From Investing Activities      
Capital expenditures and investments   323 680
Proceeds from asset dispositions   (99) (319)
Long-term advances/loans-related parties 5,473 2,301 3,212
Collection of advances/loans-related parties (9,235) (1,755) (7,464)
Net cash provided by (used in) continuing investing activities (3,762) 770 (3,891)
Net cash provided by (used in) discontinued operations 8,200    
Net Cash Provided by (Used in) Investing Activities 4,438 770 (3,891)
Cash Flows From Financing Activities      
Issuance of debt (13,589) (2,301) (3,213)
Repayment of debt 9,149 1,755 7,464
Dividends paid on common stock 3,052 2,666 1,945
Other   27 (41)
Net cash provided by (used in) continuing financing activities (1,388) 2,147 6,155
Net cash provided by (used in) discontinued operations 294 (251) (319)
Net Cash Provided by (Used in) Financing Activities (1,094) 1,896 5,836
Net Change in Cash and Cash Equivalents   153 (139)
Cash and cash equivalents at beginning of year   (153) (14)
Cash and Cash Equivalents at End of Year     $ (153)
[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.