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Earnings Per Share (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Schedule Of Earnings Per Share Basic And Diluted By Common Class [Table Text Block]

The following table sets forth the computation of basic and diluted earnings per share on net income (in thousands, except per share information):

		2018				2017				2016
Earnings:
Net income (numerator for basic and diluted calculations)		$	715,842			$	1,822,181			$	701,443
Shares:
Weighted average outstanding shares (denominator for basic calculations)		63,658				64,427				64,274
Equivalent shares from outstanding stock options		1,436				1,326				715
Diluted shares (denominator for diluted calculations)		65,094				65,753				64,989
Earnings per share:
Basic		$	11.25			$	28.28			$	10.91
Diluted		11.00				27.71				10.79

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- References

No definition available.

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- Definition

Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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