Operating Property and Equipment

12 Months Ended

Dec. 31, 2016

Property, Plant and Equipment [Abstract]

OPERATING PROPERTY AND EQUIPMENT

OPERATING PROPERTY AND EQUIPMENT

	Estimated Useful  Lives	December 31,
		2016			2015
	(In years)	(In thousands)
Land	—	$	212,660		203,543
Buildings and improvements	10 — 40	808,909			776,304
Machinery and equipment	3 — 10	737,899			709,173
Other	3 — 10	114,442			109,554
		1,873,910			1,798,574
Accumulated depreciation		(1,128,040		)	(1,083,604	)
Total		$	745,870		714,970

Depreciation expense was $88 million, $84 million and $79 million in 2016, 2015 and 2014, respectively.