Note 20:

Other Operating Expense

The components of “Other operating expense, net” are as follows.

	For the Years Ended December 31,
	2018			2017		2016
Other Operating Expense, Net
Foreign currency transaction (gains) losses, net	$	(1.9	)	$	9.3	$	(5.9	)
Restructuring charges ⁽¹⁾		12.7			5.3		32.9
Environmental remediation expenses⁽²⁾		-			0.9		5.6
Stock-based compensation⁽³⁾		(2.3	)		194.2		-
Shareholder litigation settlement recoveries⁽⁴⁾		(9.5	)		-		-
Acquisition related expenses and non-cash charges⁽⁵⁾		9.8			3.4		4.8
(Gains) losses on asset and business disposals		(1.1	)		0.8		0.1
Other, net		1.4			8.2		11.1
Total other operating expense, net	$	9.1		$	222.1	$	48.6

⁽¹⁾

See Note 4 “Restructuring.”

⁽²⁾

Estimated environmental remediation costs recorded on an undiscounted basis for a former production facility.

⁽³⁾

Represents stock-based compensation expense recognized for the year ended December 31, 2018 of $2.8 million, reduced by $5.1 million primarily due to a decrease in the estimated accrual for employer taxes related to DSUs as a result of a lower per share stock price.

Represents stock-based compensation expense recognized for the year ended December 31, 2017 for stock options outstanding of $77.6 million and DSUs granted to employees at the date of the initial public offering of $97.4 million under the 2013 Stock Incentive Plan and employer taxes related to DSUs granted to employees at the date of the initial public offering of $19.2 million.

⁽⁴⁾

Represents insurance recoveries of the Company’s shareholder litigation settlement in 2014.

⁽⁵⁾

Represents costs associated with successful and/or abandoned acquisitions, including third-party expenses, post-closure integration costs (including certain incentive and non-incentive cash compensation costs), and non-cash charges and credits arising from fair value purchase accounting adjustments.