Quarterly report pursuant to Section 13 or 15(d)

Background and Basis of Presentation (Details 2)

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Background and Basis of Presentation (Details 2) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Dec. 31, 2013
Errors related to accounting for sales commissions
Adjustment
Jun. 30, 2013
Errors related to accounting for sales commissions
Adjustment
Mar. 31, 2013
Errors related to accounting for sales commissions
Adjustment
Mar. 31, 2013
Errors related to accounting for sales commissions
Adjustment
Sep. 30, 2013
Errors related to accounting for sales commissions
Adjustment
Correction of Errors                  
Operating expenses $ 99.9 $ 108.4 $ 193.9 $ 194.8 $ (2.0) $ (2.3) $ (2.6) $ (2.7) $ (8.5)
Cost of goods sold 254.0 264.5 507.9 459.2   2.3 2.6 2.7 8.5
Operating expenses and cost of goods sold                 8.5
Immaterial adjustment to correct prior period errors         $ 2.0