SUPPLEMENTAL CASH FLOW AND OTHER DATA

12 Months Ended

Dec. 31, 2020

Supplemental Cash Flow Elements [Abstract]

Supplemental cash flow and other data for the years ended December 31, 2020, 2019 and 2018 was as follows:


	2020		2019		2018

Depreciation expense	$	258	$	233	$	219
Amortization expense	103		96		90
Depreciation and amortization expense	$	361	$	329	$	309

Interest expense	$	(166)	$	(180)	$	(169)
Interest income	3		5		2
Interest expense, net	$	(163)	$	(175)	$	(167)

Interest paid	$	201	$	192	$	174
Income taxes paid	$	360	$	202	$	84

Accounts payable associated with capital expenditures	$	46	$	26	$	11
Accounts payable associated with purchases of treasury stock	$	—	$	—	$	3
Dividend payable	$	76	$	71	$	71

Businesses acquired:
Fair value of assets acquired	$	368	$	63	$	453
Fair value of liabilities assumed	17		—		7
Fair value of net assets acquired	351		63		446
Merger consideration payable	—		(5)		(19)
Cash paid for business acquisitions	351		58		427
Less: Cash acquired	21		—		6
Business acquisitions, net of cash acquired	$	330	$	58	$	421


	2020		2019		2018
Leases:
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from operating leases	$	185	$	180
Operating cash flows from finance leases	$	3	$	3
Financing cash flows from finance leases	$	3	$	4
Leased assets obtained in exchange for new operating lease liabilities	$	219	$	164
Leased assets obtained in exchange for new finance lease liabilities (a)	$	—	$	1	$	1

(a) For the year ended December 31, 2018, leased assets obtained in exchange for new finance lease liabilities reflects information prior to the adoption of the new accounting standard for leases on January 1, 2019. See Note 14 for further discussion of the Company's accounting for leases.