v3.25.4
Employee Benefit Plans - Narrative (Details)
$ / shares in Units, shares in Millions
 12 Months Ended
Dec. 31, 2025
USD ($)
installment
$ / shares
shares
Dec. 31, 2024
USD ($)
$ / shares
Dec. 31, 2023
USD ($)
$ / shares
Dec. 31, 2013
Dec. 31, 2022
USD ($)
Defined Benefit Plan Disclosure [Line Items]          
Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Excluding Service Cost, Statement of Income or Comprehensive Income [Extensible Enumeration] Other Nonoperating Income (Expense) Other Nonoperating Income (Expense) Other Nonoperating Income (Expense)    
Settlements (loss) gain $ (5,000,000) $ 1,000,000 $ (6,000,000)    
Percent amortized for net actuarial gains and losses 10.00% 10.00% 10.00%    
Severance expense $ 286,000,000        
Aggregate intrinsic value, exercised (60,000,000)        
Corporate          
Defined Benefit Plan Disclosure [Line Items]          
Severance expense 72,000,000        
Alaska          
Defined Benefit Plan Disclosure [Line Items]          
Severance expense 43,000,000        
Lower 48          
Defined Benefit Plan Disclosure [Line Items]          
Severance expense 87,000,000        
Canada          
Defined Benefit Plan Disclosure [Line Items]          
Severance expense 29,000,000        
Europe, Middle East and North Africa          
Defined Benefit Plan Disclosure [Line Items]          
Severance expense 48,000,000        
Asia Pacific          
Defined Benefit Plan Disclosure [Line Items]          
Severance expense 7,000,000        
Production and Operating Expenses          
Defined Benefit Plan Disclosure [Line Items]          
Severance expense 214,000,000        
Selling, General and Administrative Expenses          
Defined Benefit Plan Disclosure [Line Items]          
Severance expense $ 72,000,000        
Share-based Payment Arrangement, Option          
Defined Benefit Plan Disclosure [Line Items]          
Vesting period 6 months        
Expiration period 10 years        
Restricted Stock Units (RSUs) | Discontinued Operations          
Defined Benefit Plan Disclosure [Line Items]          
Weighted-average grant date fair value, granted (in dollars per share) | $ / shares $ 98.68 $ 111.91 $ 115.88    
Total fair value, issued $ 12,000,000 $ 35,000,000 $ 46,000,000    
RSU Stock Settled          
Defined Benefit Plan Disclosure [Line Items]          
Unrecognized compensation cost from stock options $ 188,000,000        
Weighted average period of recognition of unvested options 1 year 8 months 15 days        
Weighted-average grant date fair value, granted (in dollars per share) | $ / shares $ 99.26 $ 109.79 $ 110.91    
Total fair value, issued $ 285,000,000 $ 410,000,000 $ 284,000,000    
PSU Cash Settled and Stock Settled          
Defined Benefit Plan Disclosure [Line Items]          
PSUs, authorization period 3 years        
PSU Cash Settled Program          
Defined Benefit Plan Disclosure [Line Items]          
Unrecognized compensation cost from stock options $ 0        
Weighted-average grant date fair value, granted (in dollars per share) | $ / shares $ 100.90 $ 110.39 $ 112.50    
Total fair value, issued $ 66,000,000 $ 171,000,000 $ 111,000,000    
Vesting period 5 years        
PSUs, authorization period 3 years     3 years  
PSU Stock Settled          
Defined Benefit Plan Disclosure [Line Items]          
Unrecognized compensation cost from stock options $ 0        
Weighted-average grant date fair value, granted (in dollars per share) | $ / shares $ 100.90 $ 110.39 $ 112.50    
Total fair value, issued $ 18,000,000 $ 23,000,000 $ 29,000,000    
Vesting period 5 years        
PSUs, authorization period 3 years        
PSUs, requisite period 5 years        
Twenty Fourteen Omnibus Stock and Performance Incentive Plan Of Conoco Phillips          
Defined Benefit Plan Disclosure [Line Items]          
Share based compensation plan, number of shares authorized | shares 36        
Twenty Fourteen Omnibus Stock and Performance Incentive Plan Of Conoco Phillips | Share-based Payment Arrangement, Option          
Defined Benefit Plan Disclosure [Line Items]          
Weighted-average remaining contractual term of outstanding options 1 year 10 days        
Aggregate intrinsic value, exercised   $ (63,000,000) $ (58,000,000)    
Cash received from exercise of stock options $ 15,000,000        
Stock options exercised, cashless 27,000,000        
Tax benefit from exercise of options $ 13,000,000        
Omnibus Plan, General And Executive RSU Program | Restricted Stock Units (RSUs)          
Defined Benefit Plan Disclosure [Line Items]          
Number of vesting installments | installment 1        
Employee Severance          
Defined Benefit Plan Disclosure [Line Items]          
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration] Shipping and Handling Costs, Operating expenses and selling, general and administrative expenses Shipping and Handling Costs, Operating expenses and selling, general and administrative expenses Shipping and Handling Costs, Operating expenses and selling, general and administrative expenses    
Restructuring reserve $ 378,000,000 $ 331,000,000 $ 12,000,000   $ 31,000,000
Insurance Contract, Rights and Obligations          
Defined Benefit Plan Disclosure [Line Items]          
Participating interest in annuity contract, fair value $ 40,000,000 42,000,000      
Defined Benefit Plan, Equity Securities          
Defined Benefit Plan Disclosure [Line Items]          
Target allocations for plan assets, percentage 28.00%        
Corporate          
Defined Benefit Plan Disclosure [Line Items]          
Target allocations for plan assets, percentage 68.00%        
Real estate          
Defined Benefit Plan Disclosure [Line Items]          
Target allocations for plan assets, percentage 4.00%        
Other Benefits          
Defined Benefit Plan Disclosure [Line Items]          
Settlements (loss) gain $ 0 0 0    
Other Benefits | Twenty Fourteen Omnibus Stock and Performance Incentive Plan Of Conoco Phillips          
Defined Benefit Plan Disclosure [Line Items]          
Omnibus stock and performance incentive plan life 10 years        
U.S.          
Defined Benefit Plan Disclosure [Line Items]          
Expected future employer contributions, next fiscal year $ 160,000,000        
Company contributions in savings plan and predecessor plans except leveraged employee stock ownership plan charged to expense 160,000,000 152,000,000 151,000,000    
U.S. | Pension Benefits          
Defined Benefit Plan Disclosure [Line Items]          
Settlements (loss) gain (5,000,000) 0 (6,000,000)    
Accumulated benefit obligation 1,767,000,000 1,703,000,000      
Expected future employer contributions, next fiscal year 116,000,000        
U.S. | Pension Benefits | Level 3 | Insurance Contract, Rights and Obligations          
Defined Benefit Plan Disclosure [Line Items]          
Participating interest in annuity contract, fair value 40,000,000 42,000,000      
Accumulated benefit obligation 67,000,000 71,000,000      
U.S. | Pension Benefits | Corporate | Level 3 | Insurance Contract, Rights and Obligations          
Defined Benefit Plan Disclosure [Line Items]          
Participating interest in annuity contract, fair value 107,000,000 113,000,000      
Int’l.          
Defined Benefit Plan Disclosure [Line Items]          
Expected future employer contributions, next fiscal year 60,000,000        
Company contributions in savings plan and predecessor plans except leveraged employee stock ownership plan charged to expense 27,000,000 25,000,000 23,000,000    
Int’l. | Pension Benefits          
Defined Benefit Plan Disclosure [Line Items]          
Settlements (loss) gain 0 1,000,000 $ 0    
Accumulated benefit obligation $ 2,577,000,000 $ 2,392,000,000      
COP Pre Sixty Five Retiree | U.S. | Other Benefits          
Defined Benefit Plan Disclosure [Line Items]          
Health care cost trend rate, next fiscal year 6.50%        
Ultimate health care cost trend rate 5.00%        
Post Sixty Five Retiree | U.S. | Other Benefits          
Defined Benefit Plan Disclosure [Line Items]          
Health care cost trend rate, next fiscal year 4.70%        
Ultimate health care cost trend rate 5.00%