Pensions and Postretirement Benefits Other than Pensions - Components of Net Periodic Benefit Costs (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Defined Benefit Plan Disclosure [Line Items]
Service cost - employer	$ 9,622	$ 11,046
Interest cost	55,692	56,055
Pension settlement charges	12,262
Domestic
Defined Benefit Plan Disclosure [Line Items]
Service cost - employer	9,613	11,037	$ 9,760
Interest cost	41,595	40,202	42,842
Expected return on plan assets	(57,438)	(55,299)	(52,543)
Amortization of actuarial loss	38,490	39,514	28,021
Pension settlement charges	12,262	0	0
Net periodic benefit cost	44,522	35,454	28,080
International
Defined Benefit Plan Disclosure [Line Items]
Service cost - employer	9	9	8
Interest cost	14,097	15,853	19,620
Expected return on plan assets	(11,322)	(12,421)	(19,977)
Amortization of actuarial loss	5,134	7,222	8,452
Pension settlement charges	0	0	0
Net periodic benefit cost	7,918	10,663	8,103
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost - employer	2,149	2,513	2,404
Interest cost	10,819	10,320	11,305
Amortization of prior service cost	(566)	(566)	(566)
Amortization of actuarial loss	0	0	0
Net periodic benefit cost	$ 12,402	$ 12,267	$ 13,143