Guarantor Financial Information - Condensed Consolidating Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Condensed Income Statements Captions [Line Items]
Total net sales	$ 195.9	$ 216.9	$ 684.4	$ 762.7
Total cost of sales	121.3	133.3	424.2	457.5
Selling, general and administrative expenses (exclusive of depreciation and amortization)	46.2	62.6	159.0	203.8
Restructuring, impairment and other charges-net	2.8	0.8	8.7	4.1
Depreciation and amortization	12.7	11.6	36.8	33.1
Other operating (income) loss	(19.2)	(53.5)	(16.4)	(53.5)
Income from operations	32.1	62.1	72.1	117.7
Interest expense (income)-net	8.6	8.4	26.6	27.2
Intercompany interest (income) expense-net	0.0	0.0	0.0	0.0
Investment and other income-net	(0.5)	(14.0)	(1.6)	(15.6)
(Loss) earnings before income taxes and equity in net income of subsidiaries	24.0	67.7	47.1	106.1
Income tax (benefit) expense	9.3	19.7	16.5	31.5
(Loss) earnings before equity in net income of subsidiaries	14.7	48.0	30.6	74.6
Equity in net income of subsidiaries	0.0	0.0	0.0	0.0
Net earnings	14.7	48.0	30.6	74.6
Comprehensive income (loss)	14.6	48.8	33.9	73.7
Eliminations
Condensed Income Statements Captions [Line Items]
Total net sales	(2.3)	(2.9)	(7.4)	(9.1)
Total cost of sales	(2.3)	(2.9)	(7.4)	(9.1)
Selling, general and administrative expenses (exclusive of depreciation and amortization)	0.0	0.0	0.0	0.0
Restructuring, impairment and other charges-net	0.0	0.0	0.0	0.0
Depreciation and amortization	0.0	0.0	0.0	0.0
Other operating (income) loss	0.0	0.0	0.0	0.0
Income from operations	0.0	0.0	0.0	0.0
Interest expense (income)-net	0.0	0.0	0.0	0.0
Intercompany interest (income) expense-net	0.0	0.0	0.0	0.0
Investment and other income-net	0.0	0.0	0.0	0.0
(Loss) earnings before income taxes and equity in net income of subsidiaries	0.0	0.0	0.0	0.0
Income tax (benefit) expense	0.0	0.0	0.0	0.0
(Loss) earnings before equity in net income of subsidiaries	0.0	0.0	0.0	0.0
Equity in net income of subsidiaries	(16.1)	(70.6)	(35.8)	(104.4)
Net earnings	(16.1)	(70.6)	(35.8)	(104.4)
Comprehensive income (loss)	(15.6)	(72.0)	(41.4)	(101.3)
Parent
Condensed Income Statements Captions [Line Items]
Total net sales	0.0	0.0	0.0	0.0
Total cost of sales	0.0	0.0	0.0	0.0
Selling, general and administrative expenses (exclusive of depreciation and amortization)	0.0	0.0	0.0	0.0
Restructuring, impairment and other charges-net	0.0	0.0	0.0	0.0
Depreciation and amortization	0.0	0.0	0.0	0.0
Other operating (income) loss	0.0	0.0	0.0	0.0
Income from operations	0.0	0.0	0.0	0.0
Interest expense (income)-net	8.7	8.6	27.3	27.9
Intercompany interest (income) expense-net	(5.7)	(6.1)	(17.2)	(19.4)
Investment and other income-net	0.0	0.0	0.0	0.0
(Loss) earnings before income taxes and equity in net income of subsidiaries	(3.0)	(2.5)	(10.1)	(8.5)
Income tax (benefit) expense	(1.3)	(0.8)	(3.5)	(2.6)
(Loss) earnings before equity in net income of subsidiaries	(1.7)	(1.7)	(6.6)	(5.9)
Equity in net income of subsidiaries	16.4	49.7	37.2	80.5
Net earnings	14.7	48.0	30.6	74.6
Comprehensive income (loss)	14.6	48.8	33.9	73.7
Guarantor Subsidiaries
Condensed Income Statements Captions [Line Items]
Total net sales	175.2	187.9	605.3	648.7
Total cost of sales	108.1	114.7	371.3	384.1
Selling, general and administrative expenses (exclusive of depreciation and amortization)	39.9	53.2	137.9	172.9
Restructuring, impairment and other charges-net	2.8	0.7	7.7	2.2
Depreciation and amortization	10.7	10.4	31.4	29.1
Other operating (income) loss	(19.2)	(26.6)	(18.0)	(26.6)
Income from operations	32.9	35.5	75.0	87.0
Interest expense (income)-net	0.1	0.0	0.0	(0.3)
Intercompany interest (income) expense-net	5.7	6.1	17.2	19.4
Investment and other income-net	(0.5)	(12.6)	(1.6)	(14.2)
(Loss) earnings before income taxes and equity in net income of subsidiaries	27.6	42.0	59.4	82.1
Income tax (benefit) expense	10.9	13.2	20.8	25.5
(Loss) earnings before equity in net income of subsidiaries	16.7	28.8	38.6	56.6
Equity in net income of subsidiaries	(0.3)	20.9	(1.4)	23.9
Net earnings	16.4	49.7	37.2	80.5
Comprehensive income (loss)	16.3	50.5	40.5	79.6
Non-guarantor Subsidiaries
Condensed Income Statements Captions [Line Items]
Total net sales	23.0	31.9	86.5	123.1
Total cost of sales	15.5	21.5	60.3	82.5
Selling, general and administrative expenses (exclusive of depreciation and amortization)	6.3	9.4	21.1	30.9
Restructuring, impairment and other charges-net	0.0	0.1	1.0	1.9
Depreciation and amortization	2.0	1.2	5.4	4.0
Other operating (income) loss	0.0	(26.9)	1.6	(26.9)
Income from operations	(0.8)	26.6	(2.9)	30.7
Interest expense (income)-net	(0.2)	(0.2)	(0.7)	(0.4)
Intercompany interest (income) expense-net	0.0	0.0	0.0	0.0
Investment and other income-net	0.0	(1.4)	0.0	(1.4)
(Loss) earnings before income taxes and equity in net income of subsidiaries	(0.6)	28.2	(2.2)	32.5
Income tax (benefit) expense	(0.3)	7.3	(0.8)	8.6
(Loss) earnings before equity in net income of subsidiaries	(0.3)	20.9	(1.4)	23.9
Equity in net income of subsidiaries	0.0	0.0	0.0	0.0
Net earnings	(0.3)	20.9	(1.4)	23.9
Comprehensive income (loss)	(0.7)	21.5	0.9	21.7
Services Net Sales
Condensed Income Statements Captions [Line Items]
Total net sales	130.4	138.5	419.5	485.9
Total cost of sales	66.9	75.5	217.9	253.4
Services Net Sales | Eliminations
Condensed Income Statements Captions [Line Items]
Total net sales	(1.7)	(2.0)	(4.8)	(5.9)
Total cost of sales	(1.4)	(1.8)	(4.1)	(5.1)
Services Net Sales | Parent
Condensed Income Statements Captions [Line Items]
Total net sales	0.0	0.0	0.0	0.0
Total cost of sales	0.0	0.0	0.0	0.0
Services Net Sales | Guarantor Subsidiaries
Condensed Income Statements Captions [Line Items]
Total net sales	112.8	115.6	359.1	397.7
Total cost of sales	55.9	60.4	177.4	196.9
Services Net Sales | Non-guarantor Subsidiaries
Condensed Income Statements Captions [Line Items]
Total net sales	19.3	24.9	65.2	94.1
Total cost of sales	12.4	16.9	44.6	61.6
Products Net Sales
Condensed Income Statements Captions [Line Items]
Total net sales	65.5	78.4	264.9	276.8
Total cost of sales	54.4	57.8	206.3	204.1
Products Net Sales | Eliminations
Condensed Income Statements Captions [Line Items]
Total net sales	(0.6)	(0.9)	(2.6)	(3.2)
Total cost of sales	(0.9)	(1.1)	(3.3)	(4.0)
Products Net Sales | Parent
Condensed Income Statements Captions [Line Items]
Total net sales	0.0	0.0	0.0	0.0
Total cost of sales	0.0	0.0	0.0	0.0
Products Net Sales | Guarantor Subsidiaries
Condensed Income Statements Captions [Line Items]
Total net sales	62.4	72.3	246.2	251.0
Total cost of sales	52.2	54.3	193.9	187.2
Products Net Sales | Non-guarantor Subsidiaries
Condensed Income Statements Captions [Line Items]
Total net sales	3.7	7.0	21.3	29.0
Total cost of sales	$ 3.1	$ 4.6	$ 15.7	$ 20.9