Pensions and Postretirement Benefits Other than Pensions

6 Months Ended

Jun. 30, 2015

Compensation and Retirement Disclosure [Abstract]

Pensions and Postretirement Benefits Other than Pensions

7. Pensions and Postretirement Benefits Other than Pensions

The following tables disclose the amount of net periodic benefit costs for the three and six months ended June 30, 2014 and 2015 for the Company’s defined benefit plans and other postretirement benefits:

	Pension Benefits - Domestic
	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2015			2014			2015
Components of net periodic benefit cost:
Service cost	$	2,440		$	2,759		$	4,880		$	5,518
Interest cost		10,710			10,051			21,421			20,101
Expected return on plan assets		(13,136	)		(13,665	)		(26,271	)		(27,330	)
Amortization of actuarial loss		7,006			9,878			14,011			19,757
Net periodic benefit cost	$	7,020		$	9,023		$	14,041		$	18,046
	Pension Benefits - International
	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2015			2014			2015
Components of net periodic benefit cost:
Service cost	$	3		$	2		$	6		$	5
Interest cost		5,009			3,972			9,935			7,902
Expected return on plan assets		(5,100	)		(3,112	)		(10,115	)		(6,191	)
Amortization of actuarial loss		2,158			1,809			4,280			3,600
Net periodic benefit cost	$	2,070		$	2,671		$	4,106		$	5,316
	Other Postretirement Benefits
	Three Months Ended June 30,						Six Months Ended June 30,
	2014			2015			2014			2015
Components of net periodic benefit cost:
Service cost	$	601		$	628		$	1,202		$	1,256
Interest cost		2,826			2,580			5,652			5,160
Amortization of prior service cost		(141	)		(142	)		(283	)		(283	)
Amortization of actuarial loss		—			—			—			—
Net periodic benefit cost	$	3,286		$	3,066		$	6,571		$	6,133