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Summary of Changes in Fair Value of Plans' Level 3 Assets (Detail) (USD $) In Millions, unless otherwise specified										12 Months Ended
	Dec. 31, 2013 U.S. Plans	Dec. 31, 2012 U.S. Plans	Dec. 31, 2011 U.S. Plans	Dec. 31, 2013 Other Postretirement Benefit Plans	Dec. 31, 2012 Other Postretirement Benefit Plans	Dec. 31, 2011 Other Postretirement Benefit Plans	Dec. 31, 2013 International Plans	Dec. 31, 2012 International Plans	Dec. 31, 2011 International Plans	Dec. 31, 2013 Fair Value, Inputs, Level 3 U.S. Plans	Dec. 31, 2012 Fair Value, Inputs, Level 3 U.S. Plans	Dec. 31, 2013 Fair Value, Inputs, Level 3 U.S. Plans Real Estate	Dec. 31, 2012 Fair Value, Inputs, Level 3 U.S. Plans Real Estate	Dec. 31, 2013 Fair Value, Inputs, Level 3 U.S. Plans Private Equity	Dec. 31, 2012 Fair Value, Inputs, Level 3 U.S. Plans Private Equity	Dec. 31, 2013 Fair Value, Inputs, Level 3 U.S. Plans Insurance Contracts	Dec. 31, 2012 Fair Value, Inputs, Level 3 U.S. Plans Insurance Contracts	Dec. 31, 2013 Fair Value, Inputs, Level 3 Other Postretirement Benefit Plans Insurance Contracts	Dec. 31, 2012 Fair Value, Inputs, Level 3 Other Postretirement Benefit Plans Insurance Contracts	Dec. 31, 2013 Fair Value, Inputs, Level 3 International Plans	Dec. 31, 2012 Fair Value, Inputs, Level 3 International Plans	Dec. 31, 2013 Fair Value, Inputs, Level 3 International Plans Real Estate	Dec. 31, 2012 Fair Value, Inputs, Level 3 International Plans Real Estate	Dec. 31, 2013 Fair Value, Inputs, Level 3 International Plans Insurance Contracts	Dec. 31, 2012 Fair Value, Inputs, Level 3 International Plans Insurance Contracts	Dec. 31, 2013 Fair Value, Inputs, Level 3 International Plans Commingled Funds	Dec. 31, 2012 Fair Value, Inputs, Level 3 International Plans Commingled Funds
Changes In Level 3 Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Fair value of plan assets at beginning of year	$ 4,048.0	$ 3,786.7	$ 3,558.7	$ 9.2	$ 9.7	$ 9.3	$ 2,681.8	$ 2,399.2	$ 2,115.8	$ 146.5	$ 158.9	$ 34.8	$ 33.7	$ 20.8	$ 45.6	$ 90.9	$ 79.6	$ 7.9	$ 7.5	$ 235.9	$ 185.0	$ 31.1	$ 29.0	$ 146.7	$ 145.5	$ 58.1	$ 10.5
Realized gains (losses)										(17.0)	7.6	0.5	0.3	(17.5)	7.3			(0.2)	0.4	0.4						0.4
Purchases or acquisitions											7.9				0.3		7.6	0.2	0.3	16.1	47.6	9.5	0.4	6.6	5.5		41.7
Sales or dispositions										(14.9)	(27.9)	(2.4)	(1.2)	(5.8)	(26.7)	(6.7)		(0.4)	(0.3)	(25.0)	(12.3)			(12.7)	(12.1)	(12.3)	(0.2)
Currency and unrealized gains (losses) relating to instruments still held at end of year										16.1		1.8	2.0	19.0	(5.7)	(4.7)	3.7			16.9	15.6	2.2	1.7	10.7	7.8	4.0	6.1
Fair value of plan assets at end of year	$ 4,048.0	$ 3,786.7	$ 3,558.7	$ 9.2	$ 9.7	$ 9.3	$ 2,681.8	$ 2,399.2	$ 2,115.8	$ 130.7	$ 146.5	$ 34.7	$ 34.8	$ 16.5	$ 20.8	$ 79.5	$ 90.9	$ 7.5	$ 7.9	$ 244.3	$ 235.9	$ 42.8	$ 31.1	$ 151.3	$ 146.7	$ 50.2	$ 58.1

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Actual return on plan assets, separately identifying the amount related to assets sold during the period.

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The amount of increase in the plan assets attributed to a business combination.

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The amount of decrease in the plan assets attributed to the sale, liquidation, spin-off or other divestiture of a corporate division or subsidiary.

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Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

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