Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of basic and diluted earnings per common share from continuing operations

The following table presents the calculation of basic and diluted earnings per common share from continuing operations:

	Years ended December 31,
	2017			2016		2015
	(In thousands, except per share amounts)
Earnings per share — Basic:
Earnings from continuing operations	$	791,015		264,640		305,989
Less: Distributed and undistributed earnings allocated to unvested stock	(2,848		)	(840	)	(877	)
Earnings from continuing operations available to common shareholders — Basic	$	788,167		263,800		305,112
Weighted average common shares outstanding— Basic	52,613			53,015		52,814
Earnings from continuing operations per common share — Basic	$	14.98		4.98		5.78
Earnings per share — Diluted:
Earnings from continuing operations	$	791,015		264,640		305,989
Less: Distributed and undistributed earnings allocated to unvested stock	(2,830		)	(836	)	(872	)
Earnings from continuing operations available to common shareholders — Diluted	$	788,185		263,804		305,117
Weighted average common shares outstanding— Basic	52,613			53,015		52,814
Effect of dilutive equity awards	375			346		446
Weighted average common shares outstanding— Diluted	52,988			53,361		53,260
Earnings from continuing operations per common share — Diluted	$	14.87		4.94		5.73
Anti-dilutive equity awards and market-based restrictive stock rights not included above	881			716		392