Retirement Benefits (Components of Net Periodic Benefit Cost for Defined Benefit Plans and Other Postretirement Plans) (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	$ 227	$ 381	$ 872	$ 1,144
Interest cost	896	673	3,002	2,825
Expected return on plan assets	(1,219)	(1,326)	(4,035)	(3,989)
Net amortization	590	1,491	1,964	4,482
Net periodic benefit cost	494	1,219	1,803	4,462
Non-U.S.
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	377	373	1,143	1,057
Interest cost	593	593	1,797	1,645
Expected return on plan assets	(329)	(298)	(986)	(814)
Net amortization	394	263	833	731
Net periodic benefit cost	1,035	931	2,787	2,619
Other Postretirement Benefit Plans
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Service cost	178	241	535	726
Interest cost	233	226	699	680
Net amortization	(118)	6	(355)	17
Net periodic benefit cost	$ 293	$ 473	$ 879	$ 1,423