Receivables, net (Tables)

9 Months Ended

Sep. 30, 2020

Receivables [Abstract]

Rollforward of Allowance for Doubtful Accounts

Activity in the allowance for doubtful accounts are as follows (in millions):

	Allowance for Doubtful Accounts
Balance at December 31, 2019	$	16
Cumulative effect of accounting change		6
Additions charged to expenses		8
Charge-offs and other		(1	)
Balance at September 30, 2020	$	29