Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable - Narrative (Details)

v3.20.2
Accounts Receivable - Narrative (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jan. 01, 2020
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]            
Accounts receivable, allowance for credit loss   $ 67   $ 67   $ 47
Income tax benefit   (48) $ 10 (40) $ 15  
Notes receivable   15   15    
Notes receivable, allowance for credit loss   2   2    
Cumulative Effect, Period Of Adoption, Adjustment | Accounting Standards Update 2016-13            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Accounts receivable, allowance for credit loss $ 10         $ 12
Income tax benefit $ 2          
Financing Receivable with Deferred Income Offset [Member]            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Notes receivable, full offset in deferred revenues   $ 18   $ 18    
Minimum            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Credit Loss Estimate, Historical Collection Period Measured       7 years    
Maximum            
Financing Receivable, Allowance for Credit Loss [Line Items]            
Credit Loss Estimate, Historical Collection Period Measured       10 years