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Condensed Consolidated Financial Statement Details - Intangible Assets, Software and Impairments - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Finite-Lived Intangible Assets [Line Items]    
Impairment of real estate $ 58  
Platform Initiatives    
Finite-Lived Intangible Assets [Line Items]    
Software amortization expense 62  
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, net 10,522  
Amortization expense of intangible assets 557  
Trademarks and Other Intangible Assets    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, net $ 332  
Amortization expense of intangible assets   $ 595