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 9 Months Ended
Jan. 01, 2020
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]            
Accounts receivable, allowance for credit loss   $ 74   $ 74   $ 47
Income tax benefit   15 $ 21 (25) $ 36  
Notes receivable   16   16    
Notes receivable, allowance for credit loss   2   2    
Cumulative Effect, Period of Adoption, Adjustment [Member] | 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   $ 17   $ 17    
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