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Equity Awards - Restricted Shares Narrative (Details) (USD $)
 3 Months Ended 6 Months Ended 3 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2014
Restricted Shares [Member]
Jun. 30, 2013
Restricted Shares [Member]
Jun. 30, 2014
Restricted Shares [Member]
Jun. 30, 2013
Restricted Shares [Member]
Jun. 30, 2014
Restricted Shares [Member]
Non-employee independent director [Member]
Deferred Compensation, Share-based Payments [Member]
Mar. 31, 2014
Plan 1 [Member]
Service-based restriced shares [Member]
Mar. 31, 2014
Plan 2 [Member]
Service-based restriced shares [Member]
Mar. 31, 2014
Plan 3 [Member]
number
Mar. 31, 2014
Plan 3 [Member]
Restricted Shares [Member]
Mar. 31, 2014
Plan 3 [Member]
Service-based restriced shares [Member]
Mar. 31, 2014
Plan 3 [Member]
Performance-based restriced shares [Member]
Mar. 31, 2014
Plan 5 [Member]
Service-based restriced shares [Member]
Mar. 31, 2014
Plan 5 [Member]
Service-based restriced shares [Member]
Non-employee independent director [Member]
Mar. 31, 2014
Minimum [Member]
Plan 2 [Member]
Service-based restriced shares [Member]
Mar. 31, 2014
3 year EPS CAGR metric [Member]
Plan 3 [Member]
Performance-based restriced shares [Member]
Mar. 31, 2014
3 year EPS CAGR metric [Member]
Minimum [Member]
Plan 3 [Member]
Performance-based restriced shares [Member]
Mar. 31, 2014
3 year EPS CAGR metric [Member]
Maximum [Member]
Plan 3 [Member]
Performance-based restriced shares [Member]
Mar. 31, 2014
3 year ROIC metric [Member] [Member]
Plan 3 [Member]
Performance-based restriced shares [Member]
Mar. 31, 2014
3 year ROIC metric [Member] [Member]
Minimum [Member]
Plan 3 [Member]
Performance-based restriced shares [Member]
Mar. 31, 2014
3 year ROIC metric [Member] [Member]
Maximum [Member]
Plan 3 [Member]
Performance-based restriced shares [Member]
Mar. 31, 2013
2012 EPS growth metric [Member]
Plan 4 [Member]
Performance-based restriced shares [Member]
Dec. 31, 2013
2012 EPS growth metric [Member]
Plan 4 [Member]
Performance-based restriced shares [Member]
Mar. 31, 2014
2012 & 2013 EPS CAGR metric [Member]
Plan 4 [Member]
Performance-based restriced shares [Member]
Dec. 31, 2013
2012 & 2013 EPS CAGR metric [Member]
Plan 4 [Member]
Performance-based restriced shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                                
Restricted shares issued related to director fee deferrals         4,225                                      
Number of Unvested Restricted Shares Granted     348,298     23,226 40,837   243,124 121,562,000 121,562,000   20,832               72,576   16,054  
Award requisite service period           3 years 1 year     3 years   1 year                        
ICP, Threshold target for granting stock awards                           $ 20,000                    
Cash value of incentive plan             80.00%                                  
Restriced shares value of incentive plan             20.00%                                  
Award vesting period                     3 years                          
Award percentage earned based on metric over the performance period                             75.00%     25.00%     60.00% 60.00% 40.00% 40.00%
Share-based Compensation Arrangement by Share-based Payment Award, Award percentage attained                                         175.00%   125.00%  
Number of performance metrics in restricted shares award type plan               2                                
Amount of shares earned % of target award                               30.00% 250.00%   30.00% 200.00%        
Unrecognized unvested restricted shares-based compensation expense 13,100,000   13,100,000                                          
Weighted-average period for recognition of the unrecognized unvested restricted shares-based compensation expense     2 years 2 months                                          
Restricted shares-based compensation expense $ 2,100,000 $ 2,100,000 $ 4,400,000 $ 4,800,000