COMMITMENTS AND CONTINGENCIES Roll Forward of Asbestos Liability and Related Assets (Detail) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Net Asbestos Liability Rollforward [Line Items]
Asbestos Liability And Related Assets Net Current And Noncurrent - Beginning			$ (630.8)	$ (573.7)	$ (630.8)
Asbestos Related Costs, Provision to Maintain 10-Year Forecast Period	$ (14.9)	$ (15.2)		(29.8)	(30.6)
Gain From Asbestos Insurance Settlement Agreement	4.7		2.6	0.0	(2.1)
Cash Payments				30.7	11.5
Asbestos Liability And Related Assets Net Current And Noncurrent - Ending	(572.8)	(647.1)		(572.8)	(647.1)
Asbestos-related liabilities Current	76.6	87.4		76.6	87.4	$ 76.8
Asbestos-related liabilities Non-Current	866.0	950.6		866.0	950.6	877.5
Asbestos-related assets Current	66.0	74.5		66.0	74.5	66.0
Asbestos-related assets Non-Current	303.8	316.4		303.8	316.4	$ 314.6
Liability [Member]
Net Asbestos Liability Rollforward [Line Items]
Asbestos Liability And Related Assets Net Current And Noncurrent - Beginning			(1,042.8)	(954.3)	(1,042.8)
Asbestos Related Costs, Provision to Maintain 10-Year Forecast Period				(34.8)	(35.4)
Gain From Asbestos Insurance Settlement Agreement				0.0	0.0
Cash Payments				46.5	35.3
Asbestos Liability And Related Assets Net Current And Noncurrent - Ending	(942.6)	(1,038.0)		(942.6)	(1,038.0)
Assets [Member]
Net Asbestos Liability Rollforward [Line Items]
Asbestos Liability And Related Assets Net Current And Noncurrent - Beginning			$ 412.0	380.6	412.0
Asbestos Related Costs, Provision to Maintain 10-Year Forecast Period				5.0	4.8
Gain From Asbestos Insurance Settlement Agreement				0.0	(2.1)
Cash Payments				(15.8)	(23.8)
Asbestos Liability And Related Assets Net Current And Noncurrent - Ending	$ 369.8	$ 390.9		$ 369.8	$ 390.9