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Income taxes (Textual) (Details)
 12 Months Ended
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 19, 2022
Case
Apr. 28, 2022
USD ($)
May 31, 2021
USD ($)
numberOfNotices
Tax Credit Carryforward [Line Items]            
Interest and penalties related to unrecognized tax benefits recognized in income tax provision $ 189,000,000 $ 98,000,000 $ 116,000,000      
Accrued interest and penalties associated with unrecognized tax benefits 1,100,000,000 881,000,000        
Income taxes paid 2,400,000,000 $ 1,900,000,000 $ 1,400,000,000      
Federal [Member]            
Tax Credit Carryforward [Line Items]            
Tax credit carryforwards available to reduce income taxes 170,000,000          
NOL carryforwards available to reduce income taxes 1,300,000,000          
NOL carryforwards, valuation allowance 0          
NOLs with no valuation allowance and no expiration 1,000,000,000          
Proposed additional income tax           $ 3,600,000,000
Repatriation tax on proposed additional tax           $ 900,000,000
Number of notices on proposed additional tax | numberOfNotices           2
Proposed additional income tax 2013-2015         $ 5,100,000,000  
Penalties on proposed additional income tax 2013-2105         2,000,000,000  
Repatriation tax on proposed additional tax 2013-2015         $ 2,200,000,000  
Number of notices consolidated in court | Case       2    
Federal [Member] | Expiration in tax years between 2023 and 2043            
Tax Credit Carryforward [Line Items]            
Tax credit carryforwards, valuation allowance 6,000,000          
State [Member]            
Tax Credit Carryforward [Line Items]            
Tax credit carryforwards available to reduce income taxes 896,000,000          
Tax credit carryforwards, valuation allowance 813,000,000          
NOL carryforwards available to reduce income taxes 536,000,000          
NOL carryforwards, valuation allowance 415,000,000          
Foreign [Member]            
Tax Credit Carryforward [Line Items]            
Tax credit carryforwards available to reduce income taxes 51,000,000          
Tax credit carryforwards, valuation allowance 0          
NOL carryforwards available to reduce income taxes 1,900,000,000          
NOL carryforwards, valuation allowance 186,000,000          
NOLs with no valuation allowance and no expiration 640,000,000          
Foreign [Member] | Operating Losses That Expire Between 2022 and 2031            
Tax Credit Carryforward [Line Items]            
NOL carryforwards, valuation allowance $ 0