Financial Statements of Parent Company Guarantor - Condensed Consolidating Statement of Operations and Comprehensive Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items]
Net sales	$ 1,260.9	$ 1,226.8	$ 1,265.3	$ 1,183.5	$ 1,188.1	$ 1,210.7	$ 1,301.2	$ 1,190.0	$ 4,936.5	$ 4,890.0	$ 4,616.4
Cost of goods sold									3,107.4	3,095.9	3,017.6
Gross profit	468.3	455.3	483.2	422.3	440.1	440.9	481.8	431.3	1,829.1	1,794.1	1,598.8
Selling, general and administrative									1,032.5	979.3	884.0
Research and development									115.8	114.1	98.7
Impairment of trade names									32.0	13.3	0.0
Operating income	137.4	192.2	212.8	138.4	161.8	182.8	203.4	152.7	680.8	700.7	616.1
Loss (earnings) from investment in subsidiaries									0.0	0.0	0.0
Loss on sale of businesses									4.2	3.9	3.2
Gains (Losses) on Extinguishment of Debt									101.4	0.0	0.0
Other (income) expense:
Equity income of unconsolidated subsidiaries									(1.3)	(4.3)	(1.5)
Interest income									(9.9)	(8.3)	(4.7)
Interest expense									97.2	148.4	106.6
Income from continuing operations before income taxes									489.2	561.0	512.5
Provision for income taxes									9.2	109.4	115.4
Net income from continuing operations	203.9	127.1	68.3	80.7	109.6	117.5	132.7	91.8	480.0	451.6	397.1
Income (loss) from discontinued operations, net of tax	3.5	0.0	(5.2)	7.1	21.4	22.9	10.1	15.6	5.4	70.0	(466.8)
Gain (loss) from sale / impairment of discontinued operations, net of tax	(17.8)	(1.7)	200.6	0.0	0.0	0.6	0.0	0.0	181.1	0.6	(6.7)
Discontinued Operation, Income (Loss) from Investment in Subsidiaries									0.0	0.0	0.0
Net income (loss) from continuing operations before noncontrolling interest									666.5	522.2	(76.4)
Net income (loss)	$ 189.6	$ 125.4	$ 263.7	$ 87.8	$ 131.0	$ 141.0	$ 142.8	$ 107.4	666.5	522.2	(76.4)
Net income from continuing operations									480.0	451.6	397.1
Comprehensive income (loss), net of tax
Changes in cumulative translation adjustment (inclusive of divestiture of business reclassified to gain from sale of $374.2 for the year ended December 31, 2017)									497.5	(83.0)	(264.9)
Changes in market value of derivative financial instruments									(4.6)	(8.3)	0.2
Comprehensive income (loss)									1,159.4	430.9	(341.1)
Parent Company Guarantor
Condensed Financial Statements, Captions [Line Items]
Net sales									0.0	0.0	0.0
Cost of goods sold									0.0	0.0	0.0
Gross profit									0.0	0.0	0.0
Selling, general and administrative									4.1	15.8	33.7
Research and development									0.0	0.0	0.0
Operating income									(4.1)	(15.8)	(33.7)
Loss (earnings) from investment in subsidiaries									(483.2)	(466.0)	(436.1)
Loss on sale of businesses									0.0	0.0
Gains (Losses) on Extinguishment of Debt									0.0		0.0
Other (income) expense:
Equity income of unconsolidated subsidiaries									0.0	0.0	0.0
Interest income									0.0	0.0	0.0
Interest expense									0.0	0.0	0.0
Income from continuing operations before income taxes									479.1	450.2	402.4
Provision for income taxes									(0.9)	(1.4)	5.3
Net income from continuing operations									480.0	451.6	397.1
Income (loss) from discontinued operations, net of tax									0.0	0.0	0.0
Gain (loss) from sale / impairment of discontinued operations, net of tax									0.0	0.0	0.0
Discontinued Operation, Income (Loss) from Investment in Subsidiaries									186.5	70.6	(473.5)
Net income (loss) from continuing operations before noncontrolling interest									666.5	522.2	(76.4)
Net income (loss)									666.5	522.2	(76.4)
Comprehensive income (loss), net of tax
Changes in cumulative translation adjustment (inclusive of divestiture of business reclassified to gain from sale of $374.2 for the year ended December 31, 2017)									497.5	(83.0)	(264.9)
Changes in market value of derivative financial instruments									(4.6)	(8.3)	0.2
Comprehensive income (loss)									1,159.4	430.9	(341.1)
Guarantor Subsidiaries [Member]
Condensed Financial Statements, Captions [Line Items]
Net sales									0.0	0.0	0.0
Cost of goods sold									0.0	0.0	0.0
Gross profit									0.0	0.0	0.0
Selling, general and administrative									0.6	0.0	2.2
Research and development									0.0	0.0	0.0
Operating income									(0.6)	0.0	(2.2)
Loss (earnings) from investment in subsidiaries									(482.6)	(466.0)	(439.7)
Loss on sale of businesses									0.0	0.0
Gains (Losses) on Extinguishment of Debt									0.0		0.0
Other (income) expense:
Equity income of unconsolidated subsidiaries									0.0	0.0	0.0
Interest income									(0.6)	0.0	0.0
Interest expense									0.0	0.0	1.4
Income from continuing operations before income taxes									482.6	466.0	436.1
Provision for income taxes									0.0	0.0	0.0
Net income from continuing operations									482.6	466.0	436.1
Income (loss) from discontinued operations, net of tax									0.0	0.0	0.0
Gain (loss) from sale / impairment of discontinued operations, net of tax									0.0	0.0	0.0
Discontinued Operation, Income (Loss) from Investment in Subsidiaries									186.5	70.6	(473.5)
Net income (loss) from continuing operations before noncontrolling interest									669.1	536.6	(37.4)
Net income (loss)									669.1	536.6	(37.4)
Comprehensive income (loss), net of tax
Changes in cumulative translation adjustment (inclusive of divestiture of business reclassified to gain from sale of $374.2 for the year ended December 31, 2017)									497.5	(83.0)	(264.9)
Changes in market value of derivative financial instruments									(4.6)	(8.3)	0.2
Comprehensive income (loss)									1,162.0	445.3	(302.1)
Subsidiary Issuer
Condensed Financial Statements, Captions [Line Items]
Net sales									0.0	0.0	0.0
Cost of goods sold									0.0	0.0	0.0
Gross profit									0.0	0.0	0.0
Selling, general and administrative									0.0	1.2	5.3
Research and development									0.0	0.0	0.0
Operating income									0.0	(1.2)	(5.3)
Loss (earnings) from investment in subsidiaries									(644.4)	(578.1)	(475.1)
Loss on sale of businesses									0.0	0.0
Gains (Losses) on Extinguishment of Debt									91.0		0.0
Other (income) expense:
Equity income of unconsolidated subsidiaries									0.0	0.0	0.0
Interest income									(69.2)	(70.3)	(80.6)
Interest expense									139.9	181.2	126.3
Income from continuing operations before income taxes									482.7	466.0	424.1
Provision for income taxes									0.0	0.0	0.0
Net income from continuing operations									482.7	466.0	424.1
Income (loss) from discontinued operations, net of tax									0.0	0.0	0.0
Gain (loss) from sale / impairment of discontinued operations, net of tax									0.0	0.0	0.0
Discontinued Operation, Income (Loss) from Investment in Subsidiaries									186.5	70.6	(473.5)
Net income (loss) from continuing operations before noncontrolling interest									669.2	536.6	(49.4)
Net income (loss)									669.2	536.6	(49.4)
Comprehensive income (loss), net of tax
Changes in cumulative translation adjustment (inclusive of divestiture of business reclassified to gain from sale of $374.2 for the year ended December 31, 2017)									497.5	(83.0)	(264.9)
Changes in market value of derivative financial instruments									(4.6)	(8.3)	0.2
Comprehensive income (loss)									1,162.1	445.3	(314.1)
Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Net sales									4,936.5	4,890.0	4,616.4
Cost of goods sold									3,107.4	3,095.9	3,017.6
Gross profit									1,829.1	1,794.1	1,598.8
Selling, general and administrative									1,027.8	962.3	842.8
Research and development									115.8	114.1	98.7
Operating income									685.5	717.7	657.3
Loss (earnings) from investment in subsidiaries									0.0	0.0	0.0
Loss on sale of businesses									4.2	3.9	3.2
Gains (Losses) on Extinguishment of Debt									10.4
Other (income) expense:
Equity income of unconsolidated subsidiaries									(1.3)	(4.3)	(1.5)
Interest income									(63.7)	(54.5)	(33.8)
Interest expense									80.9	83.7	88.6
Income from continuing operations before income taxes									655.0	688.9	600.8
Provision for income taxes									10.1	110.8	110.1
Net income from continuing operations									644.9	578.1	490.7
Income (loss) from discontinued operations, net of tax									5.4	70.0	(466.8)
Gain (loss) from sale / impairment of discontinued operations, net of tax									181.1	0.6	(6.7)
Discontinued Operation, Income (Loss) from Investment in Subsidiaries									0.0	0.0	0.0
Net income (loss) from continuing operations before noncontrolling interest									831.4	648.7	17.2
Net income (loss)									831.4	648.7	17.2
Comprehensive income (loss), net of tax
Changes in cumulative translation adjustment (inclusive of divestiture of business reclassified to gain from sale of $374.2 for the year ended December 31, 2017)									497.5	(83.0)	(264.9)
Changes in market value of derivative financial instruments									(4.6)	(8.3)	0.2
Comprehensive income (loss)									1,324.3	557.4	(247.5)
Eliminations
Condensed Financial Statements, Captions [Line Items]
Net sales									0.0	0.0	0.0
Cost of goods sold									0.0	0.0	0.0
Gross profit									0.0	0.0	0.0
Selling, general and administrative									0.0	0.0	0.0
Research and development									0.0	0.0	0.0
Operating income									0.0	0.0	0.0
Loss (earnings) from investment in subsidiaries									1,610.2	1,510.1	1,350.9
Loss on sale of businesses									0.0	0.0
Gains (Losses) on Extinguishment of Debt									0.0		0.0
Other (income) expense:
Equity income of unconsolidated subsidiaries									0.0	0.0	0.0
Interest income									123.6	116.5	109.7
Interest expense									(123.6)	(116.5)	(109.7)
Income from continuing operations before income taxes									(1,610.2)	(1,510.1)	(1,350.9)
Provision for income taxes									0.0	0.0	0.0
Net income from continuing operations									(1,610.2)	(1,510.1)	(1,350.9)
Income (loss) from discontinued operations, net of tax									0.0	0.0	0.0
Gain (loss) from sale / impairment of discontinued operations, net of tax									0.0	0.0	0.0
Discontinued Operation, Income (Loss) from Investment in Subsidiaries									(559.5)	(211.8)	1,420.5
Net income (loss) from continuing operations before noncontrolling interest									(2,169.7)	(1,721.9)	69.6
Net income (loss)									(2,169.7)	(1,721.9)	69.6
Comprehensive income (loss), net of tax
Changes in cumulative translation adjustment (inclusive of divestiture of business reclassified to gain from sale of $374.2 for the year ended December 31, 2017)									(1,492.5)	249.0	794.7
Changes in market value of derivative financial instruments									13.8	24.9	(0.6)
Comprehensive income (loss)									$ (3,648.4)	$ (1,448.0)	$ 863.7