1. Basis of Presentation and Use of Estimates Basis of Presentation and Use of Estimates (Tables)

6 Months Ended

Jun. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Revenue from External Customers by Geographic Areas [Table Text Block]

The following table presents our revenues disaggregated by geographic region based primarily on the location of the use of the product or service (in millions, unaudited):

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2020		2019		2020		2019
Europe	$	174.0	$	188.2	$	369.7	$	374.1
Asia	129.0		127.3		240.4		233.7
United States	205.4		222.1		434.9		448.2
Other (primarily Canada and Latin America)	28.5		35.0		63.5		70.6
Total net sales	$	536.9	$	572.6	$	1,108.5	$	1,126.6

Schedule of Product Warranty Liability [Table Text Block]

Warranty liabilities are included in Other current liabilities and Other long-term liabilities in the condensed consolidated balance sheets. Change in our warranty liability for the six month period ended June 30, 2020 and 2019 were as follows (in millions):

	Six Months Ended
	June 30,
	2020		2019
Balance at beginning of period	$	9.0	$	10.1
Provision for warranty	2.9		4.8
Actual warranty costs	(4.0)		(5.4)
Balance at end of period	$	7.9	$	9.5

Receivables, Trade and Other Accounts Receivable, Allowance for Doubtful Accounts, Policy [Policy Text Block]

Allowance for Doubtful Accounts

We record trade accounts receivable at the net invoice value and such receivables are non-interest bearing. We consider receivables past due based on the contractual payment terms. We review our exposure to accounts receivable and reserve for amounts if collectability is no longer reasonably assured based on an assessment of various factors including historical loss rates and expectations of forward-looking loss estimates.

Any adjustments made to our historical loss experience reflect current differences in asset-specific risk characteristics, including, for example, accounts receivable by customer type (public or government entity versus private entity) and by geographic location of customer.

Changes in our allowance for doubtful accounts were as follows (in millions):

December 31, 2019	$	20.2
Provision for expected credit losses	1.2
Write-offs charged against the allowance	(1.2)
Recoveries collected	0.1
June 30, 2020	$	20.3