Pensions and Other Benefit Programs (Tables)

6 Months Ended

Jun. 30, 2018

Retirement Benefits [Abstract]

Schedule of Defined Benefit Plans Disclosures

The components of net periodic benefit cost (income) were as follows:

	Defined Benefit Pension Plans												Nonpension Postretirement Benefit Plans
	United States						Foreign
	Three Months Ended						Three Months Ended						Three Months Ended
	June 30,						June 30,						June 30,
	2018			2017			2018			2017			2018		2017
Service cost	$	9		$	34		$	575		$	559		$	405	$	434
Interest cost	15,108			17,121			4,591			4,640			1,607		1,770
Expected return on plan assets	(25,119		)	(24,369		)	(9,118		)	(7,961		)	—		—
Amortization of transition credit	—			—			(2		)	(2		)	—		—
Amortization of prior service (credit) cost	(15		)	(15		)	(18		)	(17		)	88		74
Amortization of net actuarial loss	7,628			7,229			1,870			1,892			881		905
Net periodic benefit (income) cost	$	(2,389	)	$	—		$	(2,102	)	$	(889	)	$	2,981	$	3,183
Contributions to benefit plans	$	1,906		$	1,046		$	769		$	1,319		$	4,316	$	4,426
	Defined Benefit Pension Plans												Nonpension Postretirement Benefit Plans
	United States						Foreign
	Six Months Ended						Six Months Ended						Six Months Ended
	June 30,						June 30,						June 30,
	2018			2017			2018			2017			2018		2017
Service cost	$	46		$	64		$	1,164		$	1,101		$	811	$	853
Interest cost	30,724			34,366			9,287			9,184			3,210		3,541
Expected return on plan assets	(50,543		)	(48,917		)	(18,304		)	(15,742		)	—		—
Amortization of transition credit	—			—			(3		)	(4		)	—		—
Amortization of prior service (credit) cost	(30		)	(30		)	(37		)	(35		)	176		148
Amortization of net actuarial loss	15,704			14,497			3,783			3,926			1,815		1,789
Net periodic benefit (income) cost	$	(4,099	)	$	(20	)	$	(4,110	)	$	(1,570	)	$	6,012	$	6,331
Contributions to benefit plans	$	3,194		$	2,594		$	9,979		$	10,391		$	9,111	$	9,124