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Shareholders' Equity (Tables)
 12 Months Ended
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of stock option and SAR activity
The following table illustrates the stock option and SAR activity for the year ended December 31, 2016:
 
Number
of
Shares
(in 000’s)
 
Weighted-
Average
Exercise
Price
 
 
 
 
Outstanding at December 31, 2015
920

 
$
43.47

 
 
 
 
Granted
1,001

 
$
39.99

Forfeited
(93
)
 
$
46.78

Exercised
(75
)
 
$
23.55

 
 
 
 
Outstanding at December 31, 2016
1,753

 
$
42.16

Exercisable at December 31, 2016
340

 
$
37.96

Stock options & SARs expected to vest
1,414

 
$
43.17
Stock Options and Stock Appreciation Rights (SARs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Valuation Assumptions
The following table illustrates the assumptions used in estimating fair value in the years ended December 31, 2016, 2015 and 2014:
 
2016
 
2015
 
2014
Grant date fair value of stock options and SARs
$
8.61

 
$
11.37

 
$
13.40

Expected stock price volatility
26.88
%
 
25.96
%
 
34.85
%
Risk-free interest rate
1.45
%
 
1.49
%
 
1.53
%
Expected annual dividend yield
2.10
%
 
1.55
%
 
1.80
%
Expected life of options & SARs (years)
6.0

 
5.7

 
6.4
Restricted Stock Units (RSUs) and Performance Share Units (PSUs) [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Schedule of RSU and PSU activity
The following table illustrates the RSU and PSU activity for the year ended December 31, 2016:  
 
Number
of
Shares
(in 000’s)
 
Weighted-
Average
Grant-Date
Fair Value
 
 
 
 
Outstanding at December 31, 2015
353

 
$
41.23

 
 
 
 
Granted
83

 
$
40.27

Vested
(110
)
 
$
43.16

Forfeited
(29
)
 
$
39.62

 
 
 
 
Outstanding at December 31, 2016
297

 
$
41.01