v2.4.0.6
Supplementary Information - Condensed Consolidating Financial Information (Details 1) (USD $)
In Millions, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Sep. 30, 2011
Dec. 31, 2010
Assets        
Cash and cash equivalents $ 1,268 $ 5,780 [1] $ 3,437 $ 9,454
Short-term investments 0 [2] 581 [1],[2]    
Restricted cash 2,468 0 [1]    
Accounts and notes receivable 9,183 16,526    
Inventories 1,176 4,631 [1]    
Prepaid expenses and other current assets 1,686 2,700 [1]    
Total Current Assets 15,781 30,218 [1]    
Investments, loans and long-term receivables 25,064 33,783    
Net properties, plants and equipment 73,612 84,180 [1]    
Goodwill 0 3,332 [1]    
Intangibles 10 745 [1]    
Other assets 902 972 [1]    
Total Assets 115,369 153,230 [1]    
Liabilities and Stockholders' Equity        
Accounts payable 9,982 19,653    
Short-term debt 2,335 1,013 [1]    
Accrued income and other taxes 2,837 4,220 [1]    
Employee benefit obligations 678 1,111 [1]    
Other accruals 1,551 2,071 [1]    
Total Current Liabilities 17,383 28,068 [1]    
Long-term debt 18,782 21,610 [1]    
Asset retirement obligations and accrued environmental costs 8,421 9,329 [1]    
Joint venture acquisition obligation-related party 3,006 3,582 [1]    
Deferred income taxes 14,155 18,040 [1]    
Employee benefit obligations 3,222 4,068 [1]    
Other liabilities and deferred credits 2,523 2,784 [1]    
Total Liabilities 67,492 87,481 [1]    
Retained earnings 34,764 49,049 [1]    
Other common stockholders' equity 12,642 16,190    
Noncontrolling interests 471 510 [1]    
Total Liabilities and Equity 115,369 153,230 [1]    
ConocoPhillips [Member]
        
Assets        
Cash and cash equivalents 1 0 0 0
Short-term investments   0    
Restricted cash 2,468      
Accounts and notes receivable 20 60    
Inventories 0 0    
Prepaid expenses and other current assets 19 22    
Total Current Assets 2,508 82    
Investments, loans and long-term receivables 79,733 96,284    
Net properties, plants and equipment 0 0    
Goodwill   0    
Intangibles 0 0    
Other assets 57 64    
Total Assets 82,298 96,430    
Liabilities and Stockholders' Equity        
Accounts payable 0 10    
Short-term debt 1,378 892    
Accrued income and other taxes 0 0    
Employee benefit obligations 0 0    
Other accruals 139 244    
Total Current Liabilities 1,517 1,146    
Long-term debt 9,454 10,951    
Asset retirement obligations and accrued environmental costs 0 0    
Joint venture acquisition obligation-related party 0 0    
Deferred income taxes 14 (5)    
Employee benefit obligations 0 0    
Other liabilities and deferred credits 30,454 25,959    
Total Liabilities 41,439 38,051    
Retained earnings 28,242 42,550    
Other common stockholders' equity 12,617 15,829    
Noncontrolling interests 0 0    
Total Liabilities and Equity 82,298 96,430    
ConocoPhillips Company [Member]
        
Assets        
Cash and cash equivalents 12 2,028 162 718
Short-term investments   0    
Restricted cash 0      
Accounts and notes receivable 6,905 9,186    
Inventories 167 2,239    
Prepaid expenses and other current assets 728 1,090    
Total Current Assets 7,812 14,543    
Investments, loans and long-term receivables 115,262 135,618    
Net properties, plants and equipment 8,519 19,595    
Goodwill   3,332    
Intangibles 8 722    
Other assets 204 301    
Total Assets 131,805 174,111    
Liabilities and Stockholders' Equity        
Accounts payable 14,605 18,747    
Short-term debt 4 27    
Accrued income and other taxes 129 315    
Employee benefit obligations 470 835    
Other accruals 210 634    
Total Current Liabilities 15,418 20,558    
Long-term debt 3,220 3,599    
Asset retirement obligations and accrued environmental costs 1,168 1,766    
Joint venture acquisition obligation-related party 0 0    
Deferred income taxes 58 3,982    
Employee benefit obligations 2,523 3,092    
Other liabilities and deferred credits 19,991 40,479    
Total Liabilities 42,378 73,476    
Retained earnings 22,341 34,921    
Other common stockholders' equity 67,086 65,714    
Noncontrolling interests 0 0    
Total Liabilities and Equity 131,805 174,111    
ConocoPhillips Australia Funding Company [Member]
        
Assets        
Cash and cash equivalents 3 1 2 0
Short-term investments   0    
Restricted cash 0      
Accounts and notes receivable 0 0    
Inventories 0 0    
Prepaid expenses and other current assets 0 0    
Total Current Assets 3 1    
Investments, loans and long-term receivables 771 760    
Net properties, plants and equipment 0 0    
Goodwill   0    
Intangibles 0 0    
Other assets 0 0    
Total Assets 774 761    
Liabilities and Stockholders' Equity        
Accounts payable 0 0    
Short-term debt 750 0    
Accrued income and other taxes 0 0    
Employee benefit obligations 0 0    
Other accruals 19 9    
Total Current Liabilities 769 9    
Long-term debt 0 749    
Asset retirement obligations and accrued environmental costs 0 0    
Joint venture acquisition obligation-related party 0 0    
Deferred income taxes 0 0    
Employee benefit obligations 0 0    
Other liabilities and deferred credits 0 0    
Total Liabilities 769 758    
Retained earnings 3 1    
Other common stockholders' equity 2 2    
Noncontrolling interests 0 0    
Total Liabilities and Equity 774 761    
ConocoPhillips Canada Funding Company I [Member]
        
Assets        
Cash and cash equivalents 44 37 31 29
Short-term investments   0    
Restricted cash 0      
Accounts and notes receivable 0 0    
Inventories 0 0    
Prepaid expenses and other current assets 1 1    
Total Current Assets 45 38    
Investments, loans and long-term receivables 1,496 1,417    
Net properties, plants and equipment 0 0    
Goodwill   0    
Intangibles 0 0    
Other assets 2 2    
Total Assets 1,543 1,457    
Liabilities and Stockholders' Equity        
Accounts payable 3 1    
Short-term debt 0 0    
Accrued income and other taxes 4 2    
Employee benefit obligations 0 0    
Other accruals 32 14    
Total Current Liabilities 39 17    
Long-term debt 1,250 1,250    
Asset retirement obligations and accrued environmental costs 0 0    
Joint venture acquisition obligation-related party 0 0    
Deferred income taxes 16 11    
Employee benefit obligations 0 0    
Other liabilities and deferred credits 139 104    
Total Liabilities 1,444 1,382    
Retained earnings (102) (70)    
Other common stockholders' equity 201 145    
Noncontrolling interests 0 0    
Total Liabilities and Equity 1,543 1,457    
ConocoPhillips Canada Funding Company II [Member]
        
Assets        
Cash and cash equivalents 1 1 2 4
Short-term investments   0    
Restricted cash 0      
Accounts and notes receivable 0 0    
Inventories 0 0    
Prepaid expenses and other current assets 0 0    
Total Current Assets 1 1    
Investments, loans and long-term receivables 595 565    
Net properties, plants and equipment 0 0    
Goodwill   0    
Intangibles 0 0    
Other assets 3 3    
Total Assets 599 569    
Liabilities and Stockholders' Equity        
Accounts payable 1 1    
Short-term debt 0 0    
Accrued income and other taxes 0 0    
Employee benefit obligations 0 0    
Other accruals 11 6    
Total Current Liabilities 12 7    
Long-term debt 499 498    
Asset retirement obligations and accrued environmental costs 0 0    
Joint venture acquisition obligation-related party 0 0    
Deferred income taxes 3 9    
Employee benefit obligations 0 0    
Other liabilities and deferred credits 77 29    
Total Liabilities 591 543    
Retained earnings (95) (55)    
Other common stockholders' equity 103 81    
Noncontrolling interests 0 0    
Total Liabilities and Equity 599 569    
All Other Subsidiaries [Member]
        
Assets        
Cash and cash equivalents 1,207 3,713 3,661 8,703
Short-term investments   581    
Restricted cash 0      
Accounts and notes receivable 12,619 20,898    
Inventories 1,009 2,392    
Prepaid expenses and other current assets 938 1,587    
Total Current Assets 15,773 29,171    
Investments, loans and long-term receivables 40,667 59,651    
Net properties, plants and equipment 65,093 64,585    
Goodwill   0    
Intangibles 2 23    
Other assets 636 602    
Total Assets 122,171 154,032    
Liabilities and Stockholders' Equity        
Accounts payable 5,734 14,512    
Short-term debt 203 94    
Accrued income and other taxes 2,704 3,903    
Employee benefit obligations 208 276    
Other accruals 1,140 1,164    
Total Current Liabilities 9,989 19,949    
Long-term debt 4,359 4,563    
Asset retirement obligations and accrued environmental costs 7,253 7,563    
Joint venture acquisition obligation-related party 3,006 3,582    
Deferred income taxes 14,064 14,043    
Employee benefit obligations 699 976    
Other liabilities and deferred credits 17,274 20,047    
Total Liabilities 56,644 70,723    
Retained earnings 31,549 29,821    
Other common stockholders' equity 33,507 52,978    
Noncontrolling interests 471 510    
Total Liabilities and Equity 122,171 154,032    
Consolidating Adjustments [Member]
        
Assets        
Cash and cash equivalents 0 0 (421) 0
Short-term investments   0    
Restricted cash 0      
Accounts and notes receivable (10,361) (13,618)    
Inventories 0 0    
Prepaid expenses and other current assets 0 0    
Total Current Assets (10,361) (13,618)    
Investments, loans and long-term receivables (213,460) (260,512)    
Net properties, plants and equipment 0 0    
Goodwill   0    
Intangibles 0 0    
Other assets 0 0    
Total Assets (223,821) (274,130)    
Liabilities and Stockholders' Equity        
Accounts payable (10,361) (13,618)    
Short-term debt 0 0    
Accrued income and other taxes 0 0    
Employee benefit obligations 0 0    
Other accruals 0 0    
Total Current Liabilities (10,361) (13,618)    
Long-term debt 0 0    
Asset retirement obligations and accrued environmental costs 0 0    
Joint venture acquisition obligation-related party 0 0    
Deferred income taxes 0 0    
Employee benefit obligations 0 0    
Other liabilities and deferred credits (65,412) (83,834)    
Total Liabilities (75,773) (97,452)    
Retained earnings (47,174) (58,119)    
Other common stockholders' equity (100,874) (118,559)    
Noncontrolling interests 0 0    
Total Liabilities and Equity $ (223,821) $ (274,130)    
[1] **Certain amounts have been restated to reflect a prior period adjustment. See Note 16—Accumulated Other Comprehensive Income, in the Notes to Consolidated Financial Statements.
[2] *Includes marketable securities of $0 as of September 30, 2012, and $232 as of December 31, 2011.