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Restructuring Costs - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Dec. 31, 2021
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Restructuring Cost and Reserve [Line Items]          
Transaction and transformation, net $ 38   $ 51 $ 58 $ 75
Transformation Program [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring, description       the Company initiated a three-year ‘Transformation program’ designed to enhance operations, optimize technology and align its real estate footprint to its new ways of working  
Restructuring, Expected future effects   $ 750      
Transaction and transformation, net $ 26     $ 31  
Transformation Program [Member] | Projected Annual Cost Savings by End of 2024 [Member]          
Restructuring Cost and Reserve [Line Items]          
Annual cost savings of program   300      
Transformation Program [Member] | Cumulative Costs [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring, Expected future effects   490      
Transformation Program [Member] | Capital Expenditures [Member]          
Restructuring Cost and Reserve [Line Items]          
Restructuring, Expected future effects   $ 260