Supplemental Guarantor Condensed Financial Information (Condensed Statements Of Operations and Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 29, 2017	Sep. 30, 2016	Sep. 29, 2017	Sep. 30, 2016
Net sales:
Customers	$ 994.0	$ 924.5	$ 2,855.3	$ 2,948.4
Intercompany	0.0	0.0	0.0	0.0
Net sales	994.0	924.5	2,855.3	2,948.4
Cost of sales	884.8	821.6	2,526.6	2,615.4
Gross profit	109.2	102.9	328.7	333.0
Selling, general and administrative expenses	108.4	86.1	326.9	238.0
Goodwill impairment charges	0.0	7.4	0.0	9.0
Intangible asset impairment charges	0.0	4.7	0.0	7.5
Operating income (loss)	0.8	4.7	1.8	78.5
Other income (expense)	10.7	(2.1)	17.9	4.7
Interest income (expense):
Interest expense	(19.2)	(22.5)	(59.3)	(67.2)
Interest income	0.3	0.2	1.4	1.2
Interest income (expense), total	(18.9)	(22.3)	(57.9)	(66.0)
Income (loss) before income taxes	(7.4)	(19.7)	(38.2)	17.2
Income tax (provision) benefit	(6.8)	5.7	(32.3)	(7.7)
Equity in net earnings of affiliated companies and subsidiaries	0.0	0.3	0.0	0.7
Net income (loss) including noncontrolling interest	(14.2)	(13.7)	(70.5)	10.2
Less: net income (loss) attributable to noncontrolling interest	0.0	0.6	2.1	(0.6)
Net income (loss) attributable to Company common shareholders	(14.2)	(14.3)	(72.6)	10.8
Comprehensive income (loss):
Net income (loss)	(14.2)	(13.7)	(70.5)	10.2
Currency translation gain (loss)	18.3	13.4	68.7	44.6
Defined benefit plan adjustments, net of tax	1.1	1.3	3.3	3.9
Comprehensive income (loss), net of tax	5.2	1.0	1.5	58.7
Comprehensive income (loss) attributable to noncontrolling interest, net of tax	0.0	1.2	13.4	(0.1)
Comprehensive income (loss) attributable to Company common shareholders, net of tax	5.2	(0.2)	(11.9)	58.8
Eliminations
Net sales:
Customers	0.0	0.0	0.0	0.0
Intercompany	(107.6)	(97.1)	(323.2)	(328.5)
Net sales	(107.6)	(97.1)	(323.2)	(328.5)
Cost of sales	(89.4)	(80.6)	(270.2)	(278.3)
Gross profit	(18.2)	(16.5)	(53.0)	(50.2)
Selling, general and administrative expenses	(18.2)	(16.5)	(53.0)	(50.2)
Goodwill impairment charges		0.0		0.0
Intangible asset impairment charges		0.0		0.0
Operating income (loss)	0.0	0.0	0.0	0.0
Other income (expense)	0.0	0.0	0.0	0.0
Interest income (expense):
Interest expense	13.8	15.5	42.3	45.4
Interest income	(13.8)	(15.5)	(42.3)	(45.4)
Interest income (expense), total	0.0	0.0	0.0	0.0
Income (loss) before income taxes	0.0	0.0	0.0	0.0
Income tax (provision) benefit	0.0	0.0	0.0	0.0
Equity in net earnings of affiliated companies and subsidiaries	34.5	31.7	137.9	28.6
Net income (loss) including noncontrolling interest	34.5	31.7	137.9	28.6
Less: net income (loss) attributable to noncontrolling interest	0.0	0.0	0.0	0.0
Net income (loss) attributable to Company common shareholders	34.5	31.7	137.9	28.6
Comprehensive income (loss):
Net income (loss)	34.5	31.7	137.9	28.6
Currency translation gain (loss)	(34.8)	(27.4)	(101.2)	(85.7)
Defined benefit plan adjustments, net of tax	(0.6)	(1.6)	(2.1)	(4.8)
Comprehensive income (loss), net of tax	(0.9)	2.7	34.6	(61.9)
Comprehensive income (loss) attributable to noncontrolling interest, net of tax	0.0	0.0	0.0	0.0
Comprehensive income (loss) attributable to Company common shareholders, net of tax	(0.9)	2.7	34.6	(61.9)
Parent | Reportable Legal Entities
Net sales:
Customers	0.0	0.0	0.0	0.0
Intercompany	18.2	16.5	53.0	50.2
Net sales	18.2	16.5	53.0	50.2
Cost of sales	0.0	0.0	0.0	0.0
Gross profit	18.2	16.5	53.0	50.2
Selling, general and administrative expenses	15.9	13.7	41.7	45.3
Goodwill impairment charges		0.0		0.0
Intangible asset impairment charges		0.0		0.0
Operating income (loss)	2.3	2.8	11.3	4.9
Other income (expense)	0.0	0.0	0.0	0.0
Interest income (expense):
Interest expense	(14.3)	(14.4)	(43.1)	(43.1)
Interest income	12.5	14.1	38.4	41.6
Interest income (expense), total	(1.8)	(0.3)	(4.7)	(1.5)
Income (loss) before income taxes	0.5	2.5	6.6	3.4
Income tax (provision) benefit	(0.9)	(1.1)	(13.1)	(2.1)
Equity in net earnings of affiliated companies and subsidiaries	(13.8)	(15.7)	(66.1)	9.5
Net income (loss) including noncontrolling interest	(14.2)	(14.3)	(72.6)	10.8
Less: net income (loss) attributable to noncontrolling interest	0.0	0.0	0.0	0.0
Net income (loss) attributable to Company common shareholders	(14.2)	(14.3)	(72.6)	10.8
Comprehensive income (loss):
Net income (loss)	(14.2)	(14.3)	(72.6)	10.8
Currency translation gain (loss)	18.7	12.8	58.5	44.1
Defined benefit plan adjustments, net of tax	0.7	1.3	2.2	3.9
Comprehensive income (loss), net of tax	5.2	(0.2)	(11.9)	58.8
Comprehensive income (loss) attributable to noncontrolling interest, net of tax	0.0	0.0	0.0	0.0
Comprehensive income (loss) attributable to Company common shareholders, net of tax	5.2	(0.2)	(11.9)	58.8
Guarantor Subsidiaries | Reportable Legal Entities
Net sales:
Customers	490.9	422.1	1,446.9	1,322.5
Intercompany	46.3	44.6	135.7	162.8
Net sales	537.2	466.7	1,582.6	1,485.3
Cost of sales	477.0	405.9	1,392.7	1,302.3
Gross profit	60.2	60.8	189.9	183.0
Selling, general and administrative expenses	41.0	45.5	147.6	86.8
Goodwill impairment charges		7.4		7.4
Intangible asset impairment charges		4.7		5.0
Operating income (loss)	19.2	3.2	42.3	83.8
Other income (expense)	1.8	0.2	3.4	(0.1)
Interest income (expense):
Interest expense	(14.7)	(15.9)	(44.7)	(48.0)
Interest income	1.3	1.2	3.9	3.8
Interest income (expense), total	(13.4)	(14.7)	(40.8)	(44.2)
Income (loss) before income taxes	7.6	(11.3)	4.9	39.5
Income tax (provision) benefit	(0.7)	11.4	0.8	7.6
Equity in net earnings of affiliated companies and subsidiaries	(20.7)	(15.8)	(71.8)	(37.6)
Net income (loss) including noncontrolling interest	(13.8)	(15.7)	(66.1)	9.5
Less: net income (loss) attributable to noncontrolling interest	0.0	0.0	0.0	0.0
Net income (loss) attributable to Company common shareholders	(13.8)	(15.7)	(66.1)	9.5
Comprehensive income (loss):
Net income (loss)	(13.8)	(15.7)	(66.1)	9.5
Currency translation gain (loss)	18.7	12.8	58.5	44.1
Defined benefit plan adjustments, net of tax	0.7	1.3	2.2	3.9
Comprehensive income (loss), net of tax	5.6	(1.6)	(5.4)	57.5
Comprehensive income (loss) attributable to noncontrolling interest, net of tax	0.0	0.0	0.0	0.0
Comprehensive income (loss) attributable to Company common shareholders, net of tax	5.6	(1.6)	(5.4)	57.5
Non-Guarantor Subsidiaries | Reportable Legal Entities
Net sales:
Customers	503.1	502.4	1,408.4	1,625.9
Intercompany	43.1	36.0	134.5	115.5
Net sales	546.2	538.4	1,542.9	1,741.4
Cost of sales	497.2	496.3	1,404.1	1,591.4
Gross profit	49.0	42.1	138.8	150.0
Selling, general and administrative expenses	69.7	43.4	190.6	156.1
Goodwill impairment charges		0.0		1.6
Intangible asset impairment charges		0.0		2.5
Operating income (loss)	(20.7)	(1.3)	(51.8)	(10.2)
Other income (expense)	8.9	(2.3)	14.5	4.8
Interest income (expense):
Interest expense	(4.0)	(7.7)	(13.8)	(21.5)
Interest income	0.3	0.4	1.4	1.2
Interest income (expense), total	(3.7)	(7.3)	(12.4)	(20.3)
Income (loss) before income taxes	(15.5)	(10.9)	(49.7)	(25.7)
Income tax (provision) benefit	(5.2)	(4.6)	(20.0)	(13.2)
Equity in net earnings of affiliated companies and subsidiaries	0.0	0.1	0.0	0.2
Net income (loss) including noncontrolling interest	(20.7)	(15.4)	(69.7)	(38.7)
Less: net income (loss) attributable to noncontrolling interest	0.0	0.6	2.1	(0.6)
Net income (loss) attributable to Company common shareholders	(20.7)	(16.0)	(71.8)	(38.1)
Comprehensive income (loss):
Net income (loss)	(20.7)	(15.4)	(69.7)	(38.7)
Currency translation gain (loss)	15.7	15.2	52.9	42.1
Defined benefit plan adjustments, net of tax	0.3	0.3	1.0	0.9
Comprehensive income (loss), net of tax	(4.7)	0.1	(15.8)	4.3
Comprehensive income (loss) attributable to noncontrolling interest, net of tax	0.0	1.2	13.4	(0.1)
Comprehensive income (loss) attributable to Company common shareholders, net of tax	$ (4.7)	$ (1.1)	$ (29.2)	$ 4.4