CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Millions	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Treasury Stock [Member]	Non-controlling Interests [Member]	Total
Balance at Dec. 31, 2019	$ 4.9	$ 442.2	$ 1,905.7	$ (290.4)	$ (659.7)	$ 31.9	$ 1,434.6
Net income	0.0	0.0	38.6	0.0	0.0	1.0	39.6
Other comprehensive income (loss)	0.0	0.0	0.0	(37.8)	0.0	(1.4)	(39.2)
Dividends declared	0.0	0.0	(1.7)	0.0	0.0	0.0	(1.7)
Capital contribution from non-controlling interests	0.0	0.0	0.0	0.0	0.0	0.7	0.7
Issuance of shares pursuant to employee stock compensation plans	0.0	0.5	0.0	0.0	0.0	0.0	0.5
Purchase of common stock for treasury	0.0	0.0	0.0	0.0	(22.6)	0.0	(22.6)
Stock-based compensation	0.0	0.1	0.0	0.0	0.0	0.0	0.1
Balance at Mar. 29, 2020	4.9	442.8	1,942.6	(328.2)	(682.3)	32.2	1,412.0
Balance at Dec. 31, 2019	4.9	442.2	1,905.7	(290.4)	(659.7)	31.9	1,434.6
Net income							54.5
Other comprehensive income (loss)							(26.8)
Balance at Jun. 28, 2020	4.9	445.5	1,955.3	(316.9)	(682.3)	34.3	1,440.8
Balance at Mar. 29, 2020	4.9	442.8	1,942.6	(328.2)	(682.3)	32.2	1,412.0
Net income	0.0	0.0	14.4	0.0	0.0	0.5	14.9
Other comprehensive income (loss)	0.0	0.0	0.0	11.3	0.0	1.1	12.4
Dividends declared	0.0	0.0	(1.7)	0.0	0.0	0.0	(1.7)
Dividends paid to non-controlling interests	0.0	0.0	0.0	0.0	0.0	(0.5)	(0.5)
Capital contribution from non-controlling interests	0.0	0.0	0.0	0.0	0.0	1.0	1.0
Issuance of shares pursuant to employee stock compensation plans	0.0	0.2	0.0	0.0	0.0	0.0	0.2
Stock-based compensation	0.0	2.5	0.0	0.0	0.0	0.0	2.5
Balance at Jun. 28, 2020	4.9	445.5	1,955.3	(316.9)	(682.3)	34.3	1,440.8
Balance at Dec. 31, 2020	4.9	453.3	2,011.3	(308.3)	(700.4)	37.9	1,498.7	[1]
Net income	0.0	0.0	39.9	0.0	0.0	1.1	41.0
Other comprehensive income (loss)	0.0	0.0	0.0	(21.0)	0.0	(0.5)	(21.5)
Dividends declared	0.0	0.0	(1.7)	0.0	0.0	0.0	(1.7)
Dividends paid to non-controlling interests	0.0	0.0	0.0	0.0	0.0	(0.1)	(0.1)
Issuance of shares pursuant to employee stock compensation plans	0.0	5.8	0.0	0.0	0.0	0.0	5.8
Purchase of common stock for treasury	0.0	0.0	0.0	0.0	(20.0)	0.0	(20.0)
Stock-based compensation	0.0	2.8	0.0	0.0	0.0	0.0	2.8
Conversion of RSU's for tax withholding	0.0	(2.6)	0.0	0.0	0.0	0.0	(2.6)
Balance at Apr. 04, 2021	4.9	459.3	2,049.5	(329.3)	(720.4)	38.4	1,502.4
Balance at Dec. 31, 2020	4.9	453.3	2,011.3	(308.3)	(700.4)	37.9	1,498.7	[1]
Net income							84.0
Other comprehensive income (loss)				(16.0)			(16.2)
Balance at Jul. 04, 2021	4.9	466.7	2,089.7	(324.3)	(737.3)	39.2	1,538.9	[2]
Balance at Apr. 04, 2021	4.9	459.3	2,049.5	(329.3)	(720.4)	38.4	1,502.4
Net income	0.0	0.0	41.9	0.0	0.0	1.1	43.0
Other comprehensive income (loss)	0.0	0.0	0.0	5.0	0.0	0.3	5.3
Dividends declared	0.0	0.0	(1.7)	0.0	0.0	0.0	(1.7)
Dividends paid to non-controlling interests	0.0	0.0	0.0	0.0	0.0	(0.6)	(0.6)
Issuance of shares pursuant to employee stock compensation plans	0.0	4.6	0.0	0.0	0.0	0.0	4.6
Purchase of common stock for treasury	0.0	0.0	0.0	0.0	(16.9)	0.0	(16.9)
Stock-based compensation	0.0	2.8	0.0	0.0	0.0	0.0	2.8
Balance at Jul. 04, 2021	$ 4.9	$ 466.7	$ 2,089.7	$ (324.3)	$ (737.3)	$ 39.2	$ 1,538.9	[2]

[1] Condensed from audited financial statements

[2] Unaudited