v2.4.0.8
Supplementary Information - Condensed Consolidating Financial Information - Bal Sheet (Details 1) (USD $)
In Millions, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Dec. 31, 2011
Assets        
Cash and cash equivalents $ 3,909 $ 3,618 $ 1,044 $ 5,780
Restricted cash   748    
Short-term investments 75      
Accounts and notes receivable 8,420 9,182    
Inventories 1,134 965    
Prepaid expenses and other current assets 9,064 9,476    
Total Current Assets 22,602 23,989    
Investments, loans and long-term receivables 24,016 25,006    
Net properties, plants and equipment 69,438 67,263    
Other assets 891 886    
Total Assets 116,947 117,144    
Liabilities and Stockholders' Equity        
Accounts payable 10,437 10,013    
Short-term debt 554 955    
Accrued income and other taxes 2,813 3,366    
Employee benefit obligations 536 742    
Other accruals 2,375 2,367    
Total Current Liabilities 16,715 17,443    
Long-term debt 21,167 20,770    
Asset retirement obligations and accrued environmental costs 8,761 8,947    
Joint venture acquisition obligation-related party 2,408 2,810    
Deferred income taxes 13,986 13,185    
Employee benefit obligations 3,203 3,346    
Other liabilities and deferred credits 1,775 2,216    
Total Liabilities 68,015 68,717    
Retained earnings 37,899 35,338    
Other common stockholders' equity 10,609 12,649    
Noncontrolling interests 424 440    
Total Liabilities and Stockholders' Equity 116,947 117,144    
ConocoPhillips [Member]
        
Assets        
Cash and cash equivalents   2    
Restricted cash   748    
Accounts and notes receivable 75 64 [1]    
Prepaid expenses and other current assets 18 19    
Total Current Assets 93 833    
Investments, loans and long-term receivables 83,568 [2] 80,910 [2]    
Other assets 47 55    
Total Assets 83,708 81,798    
Liabilities and Stockholders' Equity        
Short-term debt 395 (5)    
Other accruals 211 209    
Total Current Liabilities 606 204    
Long-term debt 9,051 9,453    
Deferred income taxes 54 15    
Other liabilities and deferred credits 32,327 [2] 30,938 [2]    
Total Liabilities 42,038 40,610    
Retained earnings 31,336 28,815    
Other common stockholders' equity 10,334 12,373    
Total Liabilities and Stockholders' Equity 83,708 81,798    
ConocoPhillips Company [Member]
        
Assets        
Cash and cash equivalents 192 12 12 2,028
Accounts and notes receivable 2,385 2,711 [1]    
Inventories 112 57    
Prepaid expenses and other current assets 567 847    
Total Current Assets 3,256 3,627    
Investments, loans and long-term receivables 118,899 [2] 114,314 [2]    
Net properties, plants and equipment 9,086 8,771    
Other assets 240 216    
Total Assets 131,481 126,928    
Liabilities and Stockholders' Equity        
Accounts payable 4,780 5,531 [1]    
Short-term debt 4 4    
Accrued income and other taxes 117 104    
Employee benefit obligations 363 485    
Other accruals 654 636    
Total Current Liabilities 5,918 6,760    
Long-term debt 5,211 5,215    
Asset retirement obligations and accrued environmental costs 1,273 1,250    
Deferred income taxes 282 598    
Employee benefit obligations 2,397 2,464    
Other liabilities and deferred credits 22,898 [2] 19,916 [2]    
Total Liabilities 37,979 36,203    
Retained earnings 29,064 24,041    
Other common stockholders' equity 64,438 66,684    
Total Liabilities and Stockholders' Equity 131,481 126,928    
ConocoPhillips Australia Funding Company [Member]
        
Assets        
Cash and cash equivalents 2 6 3 1
Accounts and notes receivable 1      
Total Current Assets 3 6    
Investments, loans and long-term receivables   759 [2]    
Total Assets 3 765    
Liabilities and Stockholders' Equity        
Short-term debt   750    
Other accruals   9    
Total Current Liabilities   759    
Total Liabilities   759    
Retained earnings 1 4    
Other common stockholders' equity 2 2    
Total Liabilities and Stockholders' Equity 3 765    
ConocoPhillips Canada Funding Company I [Member]
        
Assets        
Cash and cash equivalents 54 50 44 37
Prepaid expenses and other current assets 1 1    
Total Current Assets 55 51    
Investments, loans and long-term receivables 1,379 [2] 1,455 [2]    
Other assets 1 2    
Total Assets 1,435 1,508    
Liabilities and Stockholders' Equity        
Accounts payable 1 4 [1]    
Accrued income and other taxes 5 3    
Other accruals 15 15    
Total Current Liabilities 21 22    
Long-term debt 1,250 1,250    
Deferred income taxes 15 16    
Other liabilities and deferred credits 47 [2] 117 [2]    
Total Liabilities 1,333 1,405    
Retained earnings (7) (78)    
Other common stockholders' equity 109 181    
Total Liabilities and Stockholders' Equity 1,435 1,508    
ConocoPhillips Canada Funding Company II [Member]
        
Assets        
Cash and cash equivalents 2 2 1 1
Total Current Assets 2 2    
Investments, loans and long-term receivables 547 [2] 578 [2]    
Other assets 3 3    
Total Assets 552 583    
Liabilities and Stockholders' Equity        
Accounts payable 1 1 [1]    
Other accruals 6 4    
Total Current Liabilities 7 5    
Long-term debt 499 499    
Deferred income taxes 7 7    
Other liabilities and deferred credits 18 [2] 50 [2]    
Total Liabilities 531 561    
Retained earnings (45) (73)    
Other common stockholders' equity 66 95    
Total Liabilities and Stockholders' Equity 552 583    
All Other Subsidiaries [Member]
        
Assets        
Cash and cash equivalents 3,659 3,546 984 3,713
Short-term investments 75      
Accounts and notes receivable 10,034 11,494 [1]    
Inventories 1,022 908    
Prepaid expenses and other current assets 8,478 8,609    
Total Current Assets 23,268 24,557    
Investments, loans and long-term receivables 43,994 [2] 44,739 [2]    
Net properties, plants and equipment 60,352 58,492    
Other assets 600 610    
Total Assets 128,214 128,398    
Liabilities and Stockholders' Equity        
Accounts payable 9,730 9,564 [1]    
Short-term debt 155 206    
Accrued income and other taxes 2,691 3,259    
Employee benefit obligations 173 257    
Other accruals 1,489 1,494    
Total Current Liabilities 14,238 14,780    
Long-term debt 5,156 4,353    
Asset retirement obligations and accrued environmental costs 7,488 7,697    
Joint venture acquisition obligation-related party 2,408 2,810    
Deferred income taxes 13,628 12,549    
Employee benefit obligations 806 882    
Other liabilities and deferred credits 17,278 [2] 21,174 [2]    
Total Liabilities 61,002 64,245    
Retained earnings 35,630 30,778    
Other common stockholders' equity 31,158 32,935    
Noncontrolling interests 424 440    
Total Liabilities and Stockholders' Equity 128,214 128,398    
Consolidating Adjustments [Member]
        
Assets        
Accounts and notes receivable (4,075) (5,087) [1]    
Total Current Assets (4,075) (5,087)    
Investments, loans and long-term receivables (224,371) [2] (217,749) [2]    
Total Assets (228,446) (222,836)    
Liabilities and Stockholders' Equity        
Accounts payable (4,075) (5,087) [1]    
Total Current Liabilities (4,075) (5,087)    
Other liabilities and deferred credits (70,793) [2] (69,979) [2]    
Total Liabilities (74,868) (75,066)    
Retained earnings (58,080) (48,149)    
Other common stockholders' equity (95,498) (99,621)    
Total Liabilities and Stockholders' Equity $ (228,446) $ (222,836)    
[1] **Revised to conform to current-year presentation in the ConocoPhillips Company and All Other Subsidiaries columns at December 31, 2012. There was no impact to Total Consolidated balances.
[2]   *Includes intercompany loans.