ACQUISITIONS (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended										12 Months Ended						0 Months Ended
	Dec. 31, 2014		Sep. 27, 2014	Jun. 28, 2014	Mar. 29, 2014	Dec. 31, 2013		Sep. 28, 2013	Jun. 29, 2013	Mar. 30, 2013	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012		Apr. 30, 2014	Oct. 08, 2014	Apr. 01, 2013	Jan. 21, 2015	Feb. 22, 2013	Dec. 17, 2010
Business Acquisition [Line Items]
Additional payments											$ 0		$ 0		$ 2.6
Goodwill purchase accounting adjustment											105.2	[1]	65.9	[1]
Net sales	636.8		642.9	718.6	547.8	548.9		589.2	630.7	519.1	2,546.1		2,287.9		2,201.3
Operating earnings (loss)	29.1		33.4	(32.1)	12.5	10.4		32.5	40.4	4.6	42.9		87.9		127.6
Fair value of tangible net assets acquired	274.9					149.8					274.9		149.8		0
Goodwill	474.3	[2]				373.5	[2]				474.3	[2]	373.5	[2]	307.6	[2]
Total consideration											267.9		146.4		2.6
Reznor [Member]
Business Acquisition [Line Items]
Cash paid																	260.0
Additional payments																	2.6
Working capital and other post-closing adjustments	0.7			1.9
Goodwill expected to be tax deductible																	76.1
Fees and expenses incurred											6.8
Net sales											117.0
Operating earnings (loss)											7.7
Depreciation and amortization expense											12.3
Inventory amortization											1.8
Definite-lived intangible assets weighted average useful life																	12 years 10 months 24 days
Goodwill																	103.7
Phoenix [Member]
Business Acquisition [Line Items]
Cash paid																		13.9
Net sales											4.0
Operating earnings (loss)											(1.6)
Depreciation and amortization expense											0.6
Inventory amortization											0.4
Deferred acquisition consideration																		1.6
Purchase price held in escrow																		1.0
Fair value of tangible net assets acquired																		8.2
Inventory fair value adjustment																		0.4
Transition services agreement																		0.3
Definite-lived intangibles acquired																		3.9
Definite-lived intangible assets weighted average useful life																		7 years 9 months 18 days
Goodwill																		1.5
2GIG [Member]
Business Acquisition [Line Items]
Cash paid																			135.0
Total consideration																			164.2
Estimated working capital adjustments																			13.9
Contingent consideration								1.6	12.3
Settlement of receivable																			15.3
Transaction costs excluded from pro forma information											1.8
Anthro [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Cash paid																				50.0
Additional payments																				0.8
Purchase price held in escrow																				5.0
Percentage of voting rights acquired																				100.00%
Gefen Distribution [Member]
Business Acquisition [Line Items]
Cash paid																					0.9
Total consideration																					2.9
Settlement of receivable																					1.8
Payable to seller																					0.2
Ergotron Member]
Business Acquisition [Line Items]
Cash paid															2.6							298.2
Total consideration																						$ 299.6

[1] Acquisition adjustments recorded during 2014 for the RCH segment relate to the acquisition of Reznor and Phoenix. Acquisition adjustments recorded during 2013 for the SCS and AVC segments relate to the acquisition of 2GIG and Gefen Distribution, respectively. See Note 2, “Acquisitions”.

[2] The CAS reporting unit did not have goodwill in any period presented.