FAIR VALUE MEASUREMENTS (Tables)

12 Months Ended

Dec. 31, 2019

Fair Value Disclosures [Abstract]

Schedule of estimated fair values for each type of instrument

The estimated fair values for each type of instrument are presented below (in millions).

	December 31, 2019			Level One			Level Two			Level Three
Asset Class:
Mutual fund investments in a non-qualified savings plan(a)	$	1.4		$	1.4		$	—		$	—
Derivatives - foreign currency contracts, net	2.8			—			2.8			—
Total Assets	$	4.2		$	1.4		$	2.8		$	—
Liability Class:
Liabilities related to non-qualified savings plan	$	(1.4	)	$	(1.4	)	$	—		$	—
Derivatives – natural gas instruments, net	(0.6		)	—			(0.6		)	—
Total Liabilities	$	(2.0	)	$	(1.4	)	$	(0.6	)	$	—

(a) Includes mutual fund investments of approximately 30% in the common stock of large-cap U.S. companies, 15% in the common stock of small to mid-cap U.S. companies, 5% in the common stock of international companies, 10% in bond funds, 20% in short-term investments and 20% in blended funds.

	December 31, 2018			Level One			Level Two			Level Three
Asset Class:
Mutual fund investments in a non-qualified savings plan(a)	$	1.8		$	1.8		$	—		$	—
Derivatives - foreign currency contracts, net	4.5			—			4.5			—
Total Assets	$	6.3		$	1.8		$	4.5		$	—
Liability Class:
Liabilities related to non-qualified savings plan	$	(1.8	)	$	(1.8	)	$	—		$	—
Derivatives - natural gas instruments, net	(0.6		)	—			(0.6		)	—
Total Liabilities	$	(2.4	)	$	(1.8	)	$	(0.6	)	$	—

(a)

Includes mutual fund investments of approximately 25% in the common stock of large-cap U.S. companies, 15% in the common stock of small to mid-cap U.S. companies, 5% in the common stock of international companies, 20% in bond funds, 15% in short-term investments and 20% in blended funds.