GOODWILL AND OTHER INTANGIBLE ASSETS (Tables)

12 Months Ended

Dec. 31, 2022

Goodwill and Intangible Assets Disclosure [Abstract]

Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill were as follows:

In millions
	North America		International		Total
Balance as of December 31, 2020	$	2,448.8	$	370.5	$	2,819.3
Acquisition	22.0		—		22.0
Divestitures	—		(6.0)		(6.0)
Changes due to foreign currency fluctuations and other	—		(19.6)		(19.6)
Balance as of December 31, 2021	2,470.8		344.9		2,815.7
Purchase accounting adjustments for prior year acquisition (Note 3)	1.7		—		1.7
Changes due to foreign currency fluctuations and other	—		(32.5)		(32.5)
Balance as of December 31, 2022	$	2,472.5	$	312.4	$	2,784.9

Summary of Accumulated Non-Cash Impairment Charges by Segment

Accumulated non-cash impairment charges by segment were as follows:

In millions
	December 31,
	2022		2021
North America	$	134.8	$	421.1
International	175.6		175.6
Total	$	310.4	$	596.7

Carrying Values of Other Intangible Assets

The values of other intangible assets were as follows:

In millions
	December 31,
	2022						2021
	Gross Carrying Amount		Accumulated Amortization		Net Value		Gross Carrying Amount		Accumulated Amortization		Net Value
Amortizable intangibles:
Customer relationships	$	1,242.2	$	807.6	$	434.6	$	1,297.6	$	722.9	$	574.7
Covenants not-to-compete	2.6		2.6		—		3.5		3.2		0.3
Operating permits	12.3		11.9		0.4		12.1		8.5		3.6
Tradenames	1.1		0.6		0.5		3.6		1.4		2.2
Other	1.8		0.6		1.2		0.6		0.6		—
Indefinite-lived intangibles:
Operating permits	67.2		—		67.2		70.0		—		70.0
Tradenames	307.2		—		307.2		313.7		—		313.7
Total	$	1,634.4	$	823.3	$	811.1	$	1,701.1	$	736.6	$	964.5

Changes in Carrying Amount of Intangible Assets

The changes in the carrying amount of intangible assets were as follows:

In millions
	Total
Balance as of December 31, 2020	$	1,087.4
Acquisition	20.0
Divestitures	(10.9)
Impairments	(4.6)
Amortization	(117.9)
Changes due to foreign currency fluctuations	(9.5)
Balance as of December 31, 2021	964.5
Purchase accounting adjustments for prior year acquisition (Note 3)	(2.5)
Acquisition	1.2
Divestitures	(12.6)
Impairments	—
Amortization	(124.0)
Changes due to foreign currency fluctuations	(15.5)
Balance as of December 31, 2022	$	811.1

Estimated Intangible Asset Amortization Expense

Our estimated intangible asset amortization expense for each of the next five years is as follows for the years ending December 31:

In millions
2023	$	111.9
2024	109.7
2025	90.6
2026	30.2
2027	23.1