Basis of Presentation (Tables)

6 Months Ended

Jun. 30, 2020

Basis of Presentation

Summary of allowance for doubtful accounts

	2020		2019
Balance as of January 1,	$	28	$	29
Adoption of new accounting standard		(1)		—
Additions charged to expense		36		19
Accounts written-off, net of recoveries		(16)		(23)
Acquisitions, divestitures and other, net		(1)		3
Balance as of June 30,	$	46	$	28