Commitments and Contingencies - Narrative (Detail) $ / shares in Units, € in Millions, $ in Millions				1 Months Ended		12 Months Ended
	Jun. 13, 2014 USD ($) $ / shares shares	Feb. 03, 2014 USD ($) shares	May 25, 2010 EUR (€)	Mar. 31, 2007 shares	Feb. 28, 2002 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2002 USD ($) shares	Jul. 03, 2014 EUR (€)	Sep. 19, 2008 Trust
Loss Contingencies [Line Items]
Original number of shares expected to be issued under settlement agreement, adjusted | shares				18,000,000
Cash payment for settlements from cash and cash equivalents		$ 555.0
Cash payment for settlements from borrowings		260.0
Cash payment for settlements from receivables securitization		115.0
Common stock repurchase value						$ 2,700.6	$ 1,478.1
Settlement agreement (as defined therein) and tax deduction								$ 1,490.0
Original number of shares expect to be issued under settlement agreement | shares									9,000,000
Charge covering a cash payment that will be required to make under settlement agreement upon the effectiveness of an appropriate plan of reorganization									$ 513.0
Percentage of annual interest that accrues on Settlement agreement charges from December 21, 2002 to the date of payment									5.50%
Stock split ratio				2
Establishment of asbestos trust under Section 524(g) | Trust											2
Charges accrued for potential liabilities					$ 172.0
Loss contingency liability						13.0				€ 10
Charges related to development grant matter								14.0
Principal contractual obligations including agreements to purchase an estimated amount of goods, including raw materials, or services						67.8
Asset retirement obligation liabilities						11.0	10.0
Property and equipment, net						998.4	889.6
Accretion expense						0.3
Net rental expense						12.1	27.5	$ 28.7
Buildings
Loss Contingencies [Line Items]
Property and equipment, net						3.7	3.5
Leasehold Improvements
Loss Contingencies [Line Items]
Property and equipment, net						$ 7.3	$ 6.5
Italian Ministry of Economic Development | Italy
Loss Contingencies [Line Items]
Repayment of grant monies | €			€ 5
WRG Asbestos PI Trust and WRG Asbestos PD Trust
Loss Contingencies [Line Items]
Cash payments under settlement agreement		$ 929.7
WRG Asbestos PI Trust
Loss Contingencies [Line Items]
Original number of shares expected to be issued under settlement agreement, adjusted | shares		18,000,000
Common stock repurchase value	$ 130.0
Number of common stock shares repurchased | shares	3,932,244
Common stock repurchase (price per share) | $ / shares	$ 33.06