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Income Taxes - Narrative (Details)
$ in Millions
 3 Months Ended 12 Months Ended
Sep. 30, 2019
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
transaction
Dec. 31, 2019
USD ($)
Jan. 01, 2020
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Income Tax Contingency [Line Items]              
Effective tax rate   27.20% 36.20% 0.10%      
Effective income tax rate excluding effects of equity method transaction   23.00% 22.80%        
Net discrete tax expense benefit   $ 2 $ 119 $ 176      
Net benefit from release of liabilities for uncertain tax positions, expirations of statutes of limitations and audit settlements   47 50 $ 128      
Effective tax rate without the impact of Swiss tax reform       22.40%      
Loss carryforwards   2,935          
Loss carryforwards, expire at various dates between 2022 and 2041   171          
Loss carryforwards, indefinitely   2,764          
Unremitted earnings indefinitely reinvested   1,700          
Deferred tax liabilities not recognized to unremitted earnings indefinitely reinvested   121          
Unrecognized tax benefits   446 $ 442 $ 426 $ 442 $ 516  
Impact on tax provision from unrecognized tax benefits   372     369    
Unrecognized tax benefits reasonably possible increase resulting from unfavorable audit developments   35          
Unrecognized tax benefits reasonably possible decrease resulting from audit settlements and the expiration of statutes of limitations in various jurisdictions   65          
Unrecognized tax benefits, income tax penalties and interest accrued   173     $ 170    
Net expense for interest and penalties   11          
Transition tax liability   720         $ 1,300
KDP              
Income Tax Contingency [Line Items]              
Net tax expense incurred in connection with equity method transaction   187          
Number of sales of equity method investment transactions | transaction     4        
JDEP and KDP              
Income Tax Contingency [Line Items]              
Net tax expense incurred in connection with equity method transaction     $ 452        
Domestic Tax Authority              
Income Tax Contingency [Line Items]              
Tax benefit due to new tax guidance   44          
Foreign Tax Authority | Swiss Tax Administration              
Income Tax Contingency [Line Items]              
Net benefit from impact of Swiss tax reform $ 767            
Reduction on deferred tax expense from impact of Swiss tax reform 769     $ 769      
Indirect tax on selling, general and administrative expense $ 2            
Foreign Tax Authority | U.K.              
Income Tax Contingency [Line Items]              
Net tax expense from increase in tax liability resulting from tax legislation   $ 100          
Foreign Tax Authority | China              
Income Tax Contingency [Line Items]              
Net benefit from release of valuation allowance     $ 70