v2.4.0.8
Supplementary Information - Condensed Consolidating Financial Information - Inc Stmt (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Revenues and Other Income        
Sales and other operating revenues $ 13,350 $ 13,664 $ 27,516 $ 28,257
Equity in earnings of affiliates 494 529 856 1,019
Gain (loss) on dispositions 95 583 153 1,523
Other income 203 66 268 126
Total Revenues and Other Income 14,142 14,842 28,793 30,925
Costs and Expenses        
Purchased commodities 5,521 5,721 11,355 11,799
Production and operating expenses 1,672 1,802 3,359 3,361
Selling, general and administrative expenses 193 235 358 561
Exploration expenses 321 265 598 940
Depreciation, depletion and amortization 1,832 1,580 3,639 3,151
Impairments 28 82 30 296
Taxes other than income taxes 642 900 1,534 1,995
Accretion on discounted liabilities 105 103 211 208
Interest and debt expense 139 197 269 387
Foreign currency transaction (gains) losses (7) 12 (43) 17
Total Costs and Expenses 10,446 10,897 21,310 22,715
Income from continuing operations before income taxes 3,696 3,945 7,483 8,210
Provision for income taxes 1,630 2,225 3,393 4,311
Income (Loss) From Continuing Operations 2,066 1,720 4,090 3,899
Income (loss) from discontinued operations (3) [1] 569 [1] 126 [1] 1,345 [1]
Net income (loss) 2,063 2,289 4,216 5,244
Less: net income attributable to noncontrolling interests (13) (22) (27) (40)
Net Income (Loss) Attributable to ConocoPhillips 2,050 2,267 4,189 5,204
Comprehensive Income Attributable to ConocoPhillips 412 1,798 1,942 5,621
ConocoPhillips [Member]
        
Revenues and Other Income        
Equity in earnings of affiliates 2,449 2,068 4,840 4,582
Other income     1 1
Intercompany revenues 21 18 41 19
Total Revenues and Other Income 2,470 2,086 4,882 4,602
Costs and Expenses        
Selling, general and administrative expenses 2 3 6 8
Interest and debt expense 605 586 1,191 1,126
Foreign currency transaction (gains) losses 24 (2) 41 (2)
Total Costs and Expenses 631 587 1,238 1,132
Income from continuing operations before income taxes 1,839 1,499 3,644 3,470
Provision for income taxes (214) (199) (419) (389)
Income (Loss) From Continuing Operations 2,053 1,698 4,063 3,859
Income (loss) from discontinued operations (3) 569 126 1,345
Net income (loss) 2,050 2,267 4,189 5,204
Net Income (Loss) Attributable to ConocoPhillips 2,050 2,267 4,189 5,204
Comprehensive Income Attributable to ConocoPhillips 412 1,798 1,942 5,621
ConocoPhillips Company [Member]
        
Revenues and Other Income        
Sales and other operating revenues 4,621 4,278 9,085 8,570
Equity in earnings of affiliates 2,811 2,431 5,685 5,132
Gain (loss) on dispositions 3 0 1 0
Other income 163 24 208 55
Intercompany revenues 30 245 81 685
Total Revenues and Other Income 7,628 6,978 15,060 14,442
Costs and Expenses        
Purchased commodities 3,978 3,767 7,907 7,574
Production and operating expenses 377 337 687 604
Selling, general and administrative expenses 128 167 250 430
Exploration expenses 191 96 334 186
Depreciation, depletion and amortization 221 204 429 408
Taxes other than income taxes 48 68 125 150
Accretion on discounted liabilities 14 13 28 26
Interest and debt expense 77 90 160 171
Foreign currency transaction (gains) losses 1 54 9 26
Total Costs and Expenses 5,035 4,796 9,929 9,575
Income from continuing operations before income taxes 2,593 2,182 5,131 4,867
Provision for income taxes 144 114 291 285
Income (Loss) From Continuing Operations 2,449 2,068 4,840 4,582
Income (loss) from discontinued operations (3) 569 126 1,345
Net income (loss) 2,446 2,637 4,966 5,927
Net Income (Loss) Attributable to ConocoPhillips 2,446 2,637 4,966 5,927
Comprehensive Income Attributable to ConocoPhillips 808 2,159 2,719 6,335
ConocoPhillips Australia Funding Company [Member]
        
Revenues and Other Income        
Intercompany revenues 2 12 13 23
Total Revenues and Other Income 2 12 13 23
Costs and Expenses        
Interest and debt expense 2 11 12 21
Total Costs and Expenses 2 11 12 21
Income from continuing operations before income taxes   1 1 2
Provision for income taxes   1   1
Income (Loss) From Continuing Operations     1 1
Net income (loss)     1 1
Net Income (Loss) Attributable to ConocoPhillips     1 1
Comprehensive Income Attributable to ConocoPhillips     1 1
ConocoPhillips Canada Funding Company I [Member]
        
Revenues and Other Income        
Intercompany revenues 22 23 44 45
Total Revenues and Other Income 22 23 44 45
Costs and Expenses        
Interest and debt expense 20 20 39 39
Foreign currency transaction (gains) losses (48) (23) (70) (12)
Total Costs and Expenses (28) (3) (31) 27
Income from continuing operations before income taxes 50 26 75 18
Provision for income taxes 3   2 6
Income (Loss) From Continuing Operations 47 26 73 12
Net income (loss) 47 26 73 12
Net Income (Loss) Attributable to ConocoPhillips 47 26 73 12
Comprehensive Income Attributable to ConocoPhillips 5 (2) 1 17
ConocoPhillips Canada Funding Company II [Member]
        
Revenues and Other Income        
Intercompany revenues 9 9 17 17
Total Revenues and Other Income 9 9 17 17
Costs and Expenses        
Interest and debt expense 8 8 16 16
Foreign currency transaction (gains) losses (16) (15) (30) 1
Total Costs and Expenses (8) (7) (14) 17
Income from continuing operations before income taxes 17 16 31  
Provision for income taxes   1 1  
Income (Loss) From Continuing Operations 17 15 30  
Net income (loss) 17 15 30  
Net Income (Loss) Attributable to ConocoPhillips 17 15 30  
Comprehensive Income Attributable to ConocoPhillips   4 1 2
All Other Subsidiaries [Member]
        
Revenues and Other Income        
Sales and other operating revenues 8,729 9,386 18,431 19,687
Equity in earnings of affiliates 558 571 963 1,033
Gain (loss) on dispositions 92 583 152 1,523
Other income 40 42 59 70
Intercompany revenues 1,741 1,616 3,394 2,441
Total Revenues and Other Income 11,160 12,198 22,999 24,754
Costs and Expenses        
Purchased commodities 2,758 3,251 5,822 6,226
Production and operating expenses 1,313 1,469 2,692 2,776
Selling, general and administrative expenses 64 66 120 132
Exploration expenses 130 169 264 754
Depreciation, depletion and amortization 1,611 1,376 3,210 2,743
Impairments 28 82 30 296
Taxes other than income taxes 594 832 1,409 1,845
Accretion on discounted liabilities 91 90 183 182
Interest and debt expense 18 103 29 215
Foreign currency transaction (gains) losses 32 (2) 7 4
Total Costs and Expenses 6,639 7,436 13,766 15,173
Income from continuing operations before income taxes 4,521 4,762 9,233 9,581
Provision for income taxes 1,697 2,308 3,518 4,408
Income (Loss) From Continuing Operations 2,824 2,454 5,715 5,173
Income (loss) from discontinued operations (3) 315 126 1,092
Net income (loss) 2,821 2,769 5,841 6,265
Less: net income attributable to noncontrolling interests (13) (22) (27) (40)
Net Income (Loss) Attributable to ConocoPhillips 2,808 2,747 5,814 6,225
Comprehensive Income Attributable to ConocoPhillips 1,142 1,738 3,534 6,021
Consolidating Adjustments [Member]
        
Revenues and Other Income        
Equity in earnings of affiliates (5,324) (4,541) (10,632) (9,728)
Intercompany revenues (1,825) (1,923) (3,590) (3,230)
Total Revenues and Other Income (7,149) (6,464) (14,222) (12,958)
Costs and Expenses        
Purchased commodities (1,215) (1,297) (2,374) (2,001)
Production and operating expenses (18) (4) (20) (19)
Selling, general and administrative expenses (1) (1) (18) (9)
Interest and debt expense (591) (621) (1,178) (1,201)
Total Costs and Expenses (1,825) (1,923) (3,590) (3,230)
Income from continuing operations before income taxes (5,324) (4,541) (10,632) (9,728)
Income (Loss) From Continuing Operations (5,324) (4,541) (10,632) (9,728)
Income (loss) from discontinued operations 6 (884) (252) (2,437)
Net income (loss) (5,318) (5,425) (10,884) (12,165)
Net Income (Loss) Attributable to ConocoPhillips (5,318) (5,425) (10,884) (12,165)
Comprehensive Income Attributable to ConocoPhillips $ (1,955) $ (3,899) $ (6,256) $ (12,376)
[1] *Net of provision for income taxes on discontinued operations of: $88,$357,$79,$791