Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable - Narrative (Details)

v3.21.2
Accounts Receivable - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jan. 01, 2020
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Dec. 31, 2019
Financing Receivable, Allowance for Credit Loss [Line Items]              
Accounts receivable, allowance for credit loss   $ 79 $ 74 $ 79 $ 74 $ 72 $ 47
Income tax benefit   $ 36 $ 15 $ 72 $ (25)    
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