Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies (Details)

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Commitments and Contingencies (Details)
In Millions, unless otherwise specified
3 Months Ended 0 Months Ended
Jun. 30, 2014
item
Feb. 01, 2013
2011 Incentive Plan [Member]
Jun. 30, 2014
2011 Incentive Plan [Member]
Feb. 01, 2013
2011 Incentive Plan [Member]
Jan. 31, 2013
2011 Incentive Plan [Member]
Loss Contingencies [Line Items]          
Loss Contingency, New Claims Filed, Number 4        
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized     35.0 35.0 10.0
Share-based Compensation Arrangement by Share-based Payment Award, Number of Additional Shares Authorized   25