Components of Net Periodic Benefit Expense (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2.4	$ 2.6
Interest cost	92.3	81.1
Expected return on assets	(112.7)	(108.0)
Amortization of prior service cost	(0.3)	(0.1)
Recognized net actuarial loss	37.8	47.6
Net periodic pension expense	19.5	23.2
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost
Interest cost	62.5	54.8
Expected return on assets	(72.0)	(73.0)
Amortization of prior service cost	0.2	0.2
Recognized net actuarial loss	27.8	34.9
Net periodic pension expense	18.5	16.9
International Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	2.4	2.6
Interest cost	29.8	26.3
Expected return on assets	(40.7)	(35.0)
Amortization of prior service cost	(0.5)	(0.3)
Recognized net actuarial loss	10.0	12.7
Net periodic pension expense	1.0	6.3
Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	0.2	0.1
Interest cost	2.0	2.0
Expected return on assets	(0.1)	(0.1)
Amortization of prior service cost	0.4	0.4
Recognized net actuarial loss	0.8	1.4
Net periodic pension expense	$ 3.3	$ 3.8