Other Assets (Tables)

12 Months Ended

Dec. 31, 2021

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of prepaid expenses and other current assets

A summary of prepaid expenses and other current assets as of December 31 follows:

	2021		2020
Income tax receivable	$	173.8	$	170.7
Prepaid expenses	85.3		77.7
Inventories	72.2		59.1
Other non-trade receivables	32.2		32.2
Reinsurance receivable	31.0		34.1
Prepaid fees for cloud-based hosting arrangements, current	12.9		11.8
Other current assets	3.0		6.7
Total	$	410.4	$	392.3

Schedule of other assets

A summary of other assets as of December 31 follows:

	2021		2020
Operating right-of-use lease assets	$	255.3	$	218.8
Deferred compensation plan	133.5		131.8
Investments	127.6		145.4
Deferred contract costs and sales commissions	80.6		82.3
Reinsurance receivable	79.5		84.8
Prepaid fees and capitalized implementation costs for cloud-based hosting arrangements	43.4		29.5
Amounts recoverable for capping, closure and post-closure obligations	19.4		18.5
Other derivative assets	15.0		63.8
Interest rate swaps	4.7		10.0
Deferred financing costs	4.6		2.7
Other	24.0		29.8
Total	$	787.6	$	817.4