COMMITMENTS AND CONTINGENCIES Roll Forward of Asbestos Liability and Related Assets (Detail) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2020		Sep. 30, 2019	Sep. 30, 2020		Sep. 30, 2019		Dec. 31, 2019
Net Asbestos Liability Rollforward [Line Items]
Asbestos Liability And Related Assets Net Current And Noncurrent - Beginning					$ (430.8)		$ (472.6)
Asbestos Related Costs, Provision to Maintain 10-Year Forecast Period		$ 5.5		$ 11.9	29.1	[1]	36.3	[1]
Gain From Asbestos Insurance Settlement Agreement		0.0		0.0	(48.3)		0.0
Cash Payments	[1]				(8.9)		(20.1)
Asbestos Liability And Related Assets Net Current And Noncurrent - Ending		(538.6)		(420.7)	(538.6)		(420.7)
Asbestos-related liabilities Current		91.3		86.2	91.3		86.2		$ 86.0
Asbestos-related liabilities Non-Current		856.7		741.6	856.7		741.6		731.6
Asbestos-related assets Current		91.0	[2]	77.1	91.0	[2]	77.1		67.2
Asbestos-related assets Non-Current		318.4		330.0	318.4		330.0		$ 319.6
Asbestos Remeasurement Charge		(135.9)		68.1	(135.9)	[3]	68.1	[3]
Liability [Member]
Net Asbestos Liability Rollforward [Line Items]
Asbestos Liability And Related Assets Net Current And Noncurrent - Beginning					(817.6)		(849.3)
Asbestos Related Costs, Provision to Maintain 10-Year Forecast Period					35.4		45.1
Gain From Asbestos Insurance Settlement Agreement					0.0		0.0
Cash Payments					(60.7)		(62.1)
Asbestos Liability And Related Assets Net Current And Noncurrent - Ending		(948.0)		(827.8)	(948.0)		(827.8)
Asbestos Remeasurement Charge					(155.7)		4.5
Assets [Member]
Net Asbestos Liability Rollforward [Line Items]
Asbestos Liability And Related Assets Net Current And Noncurrent - Beginning					386.8		376.7
Asbestos Related Costs, Provision to Maintain 10-Year Forecast Period					(6.3)		(8.8)
Gain From Asbestos Insurance Settlement Agreement					(48.3)		0.0
Cash Payments					51.8		42.0
Asbestos Liability And Related Assets Net Current And Noncurrent - Ending		$ 409.4		$ 407.1	409.4		407.1
Asbestos Remeasurement Charge					$ 19.8		$ 63.6

[1] Includes certain administrative costs such as legal-related costs for insurance asset recoveries. The asbestos provision includes amounts to maintain a rolling 10-year provision prior to the transition in the third quarter of 2020 to a full horizon.

[2] The increase in asbestos-related assets as of September 30, 2020 primarily relates to a June 2020 settlement agreement with an insurer accelerating payments previously included in a buyout agreement. Refer to Note 19, Commitments and Contingencies, for further information.

[3] In the third quarter of 2020, we extended our projection to include pending claims and claims expected to be filed through 2052, reflecting the full time period over which we expect asbestos-related claims to be filed against us