XML 34 R18.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Net Income Per Share | 12 Months Ended
--- | ---
Dec. 31, 2018
Earnings Per Share [Abstract] |
Net Income Per Share [Text Block] | Net Income Per Share The following table presents the computation of net income per share on a basic and diluted basis for the years ended December 31 (shares in thousands):
|  | 2018 |  | 2017 |  | 2016
Net income attributable to shareholders |  | $ | 716,195 |  |  | $ | 402,176 |  |  | $ | 522,815 |
Weighted-average shares outstanding - basic |  | 87,476 |  |  | 88,681 |  |  | 90,960 |
Net effect of various dilutive stock-based compensation awards |  | 968 |  |  | 1,085 |  |  | 1,073 |
Weighted-average shares outstanding - diluted |  | 88,444 |  |  | 89,766 |  |  | 92,033 |
Net income per share: |  |  |  |  |  |
Basic |  | $ | 8.19 |  |  | $ | 4.54 |  |  | $ | 5.75 |
Diluted (a) |  | $ | 8.10 |  |  | $ | 4.48 |  |  | $ | 5.68 |
(a) Stock-based compensation awards for the issuance of 651 shares, 380 shares, and 766 shares for the years ended December 31, 2018, 2017, and 2016, respectively, were excluded from the computation of net income per share on a diluted basis as their effect was anti-dilutive.

X
- References No definition available. + Details
Name: | us-gaap_EarningsPerShareAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
Name: | us-gaap_EarningsPerShareTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration