Fair Value of Assets and Liabilities (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Summary of Assets and Liabilities Recorded at Fair Market Value

Assets and liabilities subject to fair value measurement by fair value level and recorded at fair value are as follows:

	Classification on consolidated balance sheets	December 31, 2020						December 31, 2019
		Fair Value		Level 1		Level 2		Fair Value		Level 1		Level 2
Assets
Certificates of deposit	Short-term investments	$	37.2	$	37.2	$	—	$	10.0	$	10.0	$	—
Assets held in rabbi trusts	Securities and other investments	6.6		6.6		—		6.2		6.2		—
Foreign exchange forward contracts	Other current assets	1.7		—		1.7		2.9		—		2.9
Interest rate swaps	Other current assets	—		—		—		1.7		—		1.7
Interest rate swaps	Securities and other investments	—		—		—		0.1		—		0.1
Total		$	45.5	$	43.8	$	1.7	$	20.9	$	16.2	$	4.7
Liabilities
Foreign exchange forward contracts	Other current liabilities	$	2.7	$	—	$	2.7	$	2.9	$	—	$	2.9
Interest rate swaps	Other current liabilities	3.0		—		3.0		2.3		—		2.3
Deferred compensation	Other liabilities	6.6		6.6		—		6.2		6.2		—
Total		$	12.3	$	6.6	$	5.7	$	11.4	$	6.2	$	5.2

Fair value and carrying value of the Company's debt instruments

The carrying amount of the Company's debt instruments approximates fair value except for the 2024 Senior Notes and the 2025 Senior Secured Notes. The fair value is summarized as follows:

	December 31, 2020				December 31, 2019
	Fair Value		Carrying Value		Fair Value		Carrying Value
2024 Senior Notes	$	400.0	$	400.0	$	387.0	$	400.0
2025 Senior Secured Notes - USD	$	778.8	$	700.0	$	—	$	—
2025 Senior Secured Notes - EUR	$	466.0	$	429.5	$	—	$	—