v2.4.0.6
Scheduled Vesting for Outstanding Restricted Stock Units (Detail) (Restricted Stock Units)
In Millions, unless otherwise specified
Mar. 31, 2013
Restricted Stock Units
 
Schedule of Vesting [Line Items]  
Nine Months Ended December 31, 2013 3.9
2014 5.2
2015 3.4
2016 1.9
2017 0.5
Thereafter 0.2
Total 15.1