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Revenue Recognition Accounting Policy (Details 3) - USD ($)
$ in Millions
Mar. 31, 2022
Dec. 31, 2021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Deferred Revenue $ 418 $ 421
Less than 1 year    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Deferred Revenue, Revenue Expected to be Recognized 67  
1 - 2 years    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Deferred Revenue, Revenue Expected to be Recognized 62  
2 - 3 years    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Deferred Revenue, Revenue Expected to be Recognized 57  
3 - 4 years    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Deferred Revenue, Revenue Expected to be Recognized 50  
4 - 5 years    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Deferred Revenue, Revenue Expected to be Recognized 44  
Thereafter    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]    
Deferred Revenue, Revenue Expected to be Recognized $ 138