Supplemental Financial Information (Tables)

9 Months Ended

Sep. 30, 2020

Supplemental Financial Information

Summary of activity of allowance for doubtful accounts

(in millions)
Allowance for Doubtful Accounts
Balance at December 31, 2019	$	228
Impact of adopting ASU 2016-13		7
Provisions/charges to income		63
Amounts charged off and other deductions		(14)
Balance at September 30, 2020	$	284

Schedule of long-term investments

	September 30,		December 31,
(in millions)	2020		2019
Long-term Investments
Equity securities	$	755	$	836
Other		48		47
Total	$	803	$	883