v2.4.0.6
Supplementary Information - Schedule of Condensed Balance Sheet (Detail) (USD $)
In Millions, unless otherwise specified
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2008
Assets        
Cash and cash equivalents $ 5,780 [1] $ 9,454 [1] $ 542 $ 755
Short-term investments 581 [1],[2] 973 [1],[2]    
Accounts and notes receivable 16,526 15,812    
Investments in LUKOIL   1,083 [1]    
Inventories 4,631 [1] 5,197 [1]    
Prepaid expenses and other current assets 2,700 [1] 2,141 [1]    
Total Current Assets 30,218 [1] 34,660 [1]    
Investments, loans and long-term receivables* 33,783 33,761    
Net properties, plants and equipment 84,180 [1] 82,554 [1]    
Goodwill 3,332 [1] 3,633 [1] 3,638  
Intangibles 745 [1] 801 [1]    
Other assets 972 [1] 905 [1]    
Total Assets 153,230 [1] 156,314 [1] 152,138  
Liabilities and Stockholders' Equity        
Accounts payable 19,653 18,399    
Short-term debt 1,013 [1] 936 [1]    
Accrued income and other taxes 4,220 [1] 4,874 [1]    
Employee benefit obligations 1,111 [1] 1,081 [1]    
Other accruals 2,071 [1] 2,129 [1]    
Total Current Liabilities 28,068 [1] 27,419 [1]    
Long-term debt 21,610 [1] 22,656 [1]    
Asset retirement obligations and accrued environmental costs 9,329 [1] 9,199 [1]    
Joint venture acquisition obligation 3,582 [1] 4,314 [1]    
Deferred income taxes 18,040 [1] 17,320 [1]    
Employee benefit obligations 4,068 [1] 3,683 [1]    
Other liabilities and deferred credits* 2,784 [1] 2,599 [1]    
Total Liabilities 87,481 [1] 87,190 [1]    
Retained earnings 49,049 [1] 40,252 [1]    
Other common stockholders' equity 16,190 28,325    
Noncontrolling interests 510 [1] 547 [1]    
Total Liabilities and Equity 153,230 [1] 156,314 [1]    
ConocoPhillips [Member]
        
Assets        
Accounts and notes receivable 60 36    
Prepaid expenses and other current assets 22 23    
Total Current Assets 82 59    
Investments, loans and long-term receivables* 96,284 84,461    
Other assets 64 55    
Total Assets 96,430 84,575    
Liabilities and Stockholders' Equity        
Accounts payable 10      
Short-term debt 892 (5)    
Other accruals 244 242    
Total Current Liabilities 1,146 237    
Long-term debt 10,951 11,832    
Deferred income taxes (5) (1)    
Other liabilities and deferred credits* 25,959 10,752    
Total Liabilities 38,051 22,820    
Retained earnings 42,550 33,753    
Other common stockholders' equity 15,829 28,002    
Total Liabilities and Equity 96,430 84,575    
ConocoPhillips Company [Member]
        
Assets        
Cash and cash equivalents 2,028 718 122 8
Accounts and notes receivable 9,186 9,126    
Inventories 2,239 3,121    
Prepaid expenses and other current assets 1,090 824    
Total Current Assets 14,543 13,789    
Investments, loans and long-term receivables* 135,618 112,008    
Net properties, plants and equipment 19,595 19,524    
Goodwill 3,332 3,633    
Intangibles 722 760    
Other assets 301 254    
Total Assets 174,111 149,968    
Liabilities and Stockholders' Equity        
Accounts payable 18,747 14,939    
Short-term debt 27 354    
Accrued income and other taxes 315 431    
Employee benefit obligations 835 773    
Other accruals 634 620    
Total Current Liabilities 20,558 17,117    
Long-term debt 3,599 3,674    
Asset retirement obligations and accrued environmental costs 1,766 1,686    
Deferred income taxes 3,982 3,659    
Employee benefit obligations 3,092 2,779    
Other liabilities and deferred credits* 40,479 32,268    
Total Liabilities 73,476 61,183    
Retained earnings 34,921 21,440    
Other common stockholders' equity 65,714 67,345    
Total Liabilities and Equity 174,111 149,968    
ConocoPhillips Australia Funding Company [Member]
        
Assets        
Cash and cash equivalents 1      
Accounts and notes receivable   1    
Total Current Assets 1 1    
Investments, loans and long-term receivables* 760 762    
Other assets   1    
Total Assets 761 764    
Liabilities and Stockholders' Equity        
Other accruals 9 9    
Total Current Liabilities 9 9    
Long-term debt 749 750    
Total Liabilities 758 759    
Retained earnings 1 3    
Other common stockholders' equity 2 2    
Total Liabilities and Equity 761 764    
ConocoPhillips Canada Funding Company I [Member]
        
Assets        
Cash and cash equivalents 37 29 18 10
Prepaid expenses and other current assets 1 2    
Total Current Assets 38 31    
Investments, loans and long-term receivables* 1,417 1,445    
Other assets 2 3    
Total Assets 1,457 1,479    
Liabilities and Stockholders' Equity        
Accounts payable 1 2    
Accrued income and other taxes 2      
Other accruals 14 15    
Total Current Liabilities 17 17    
Long-term debt 1,250 1,250    
Deferred income taxes 11 16    
Other liabilities and deferred credits* 104 114    
Total Liabilities 1,382 1,397    
Retained earnings (70) (94)    
Other common stockholders' equity 145 176    
Total Liabilities and Equity 1,457 1,479    
ConocoPhillips Canada Funding Company II [Member]
        
Assets        
Cash and cash equivalents 1 4 1 1
Total Current Assets 1 4    
Investments, loans and long-term receivables* 565 577    
Other assets 3 3    
Total Assets 569 584    
Liabilities and Stockholders' Equity        
Accounts payable 1      
Accrued income and other taxes   6    
Other accruals 6 6    
Total Current Liabilities 7 12    
Long-term debt 498 499    
Deferred income taxes 9 (2)    
Other liabilities and deferred credits* 29 61    
Total Liabilities 543 570    
Retained earnings (55) (81)    
Other common stockholders' equity 81 95    
Total Liabilities and Equity 569 584    
All Other Subsidiaries [Member]
        
Assets        
Cash and cash equivalents 3,713 8,703 554 750
Short-term investments 581 973    
Accounts and notes receivable 20,898 16,625    
Investments in LUKOIL   1,083    
Inventories 2,392 2,076    
Prepaid expenses and other current assets 1,587 1,292    
Total Current Assets 29,171 30,752    
Investments, loans and long-term receivables* 59,651 50,563    
Net properties, plants and equipment 64,585 63,030    
Intangibles 23 41    
Other assets 602 589    
Total Assets 154,032 144,975    
Liabilities and Stockholders' Equity        
Accounts payable 14,512 13,434    
Short-term debt 94 587    
Accrued income and other taxes 3,903 4,437    
Employee benefit obligations 276 308    
Other accruals 1,164 1,237    
Total Current Liabilities 19,949 20,003    
Long-term debt 4,563 4,651    
Asset retirement obligations and accrued environmental costs 7,563 7,513    
Joint venture acquisition obligation 3,582 4,314    
Deferred income taxes 14,043 13,648    
Employee benefit obligations 976 904    
Other liabilities and deferred credits* 20,047 19,169    
Total Liabilities 70,723 70,202    
Retained earnings 29,821 20,055    
Other common stockholders' equity 52,978 54,171    
Noncontrolling interests 510 547    
Total Liabilities and Equity 154,032 144,975    
Consolidating Adjustments [Member]
        
Assets        
Cash and cash equivalents     (153) (14)
Accounts and notes receivable (13,618) (9,976)    
Total Current Assets (13,618) (9,976)    
Investments, loans and long-term receivables* (260,512) (216,055)    
Total Assets (274,130) (226,031)    
Liabilities and Stockholders' Equity        
Accounts payable (13,618) (9,976)    
Total Current Liabilities (13,618) (9,976)    
Other liabilities and deferred credits* (83,834) (59,765)    
Total Liabilities (97,452) (69,741)    
Retained earnings (58,119) (34,824)    
Other common stockholders' equity (118,559) (121,466)    
Total Liabilities and Equity $ (274,130) $ (226,031)    
[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.
[2] Includes marketable securities of: $ 232 602