Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details 4)

v3.8.0.1
Income Taxes (Details 4) - USD ($)
$ in Millions
12 Months Ended
Feb. 28, 2018
Feb. 28, 2017
Feb. 29, 2016
Reconciliation of Unrecognized Tax Benefits [Roll Forward]      
Unrecognized tax benefit liabilities, beginning of period $ 39.5 $ 30.4 $ 85.5
Increases as a result of tax positions taken during a prior period 7.5 0.0 0.1
Decreases as a result of tax positions taken during a prior period (0.1) (11.5) (1.2)
Increases as a result of tax positions taken during the current period 43.8 21.3 3.7
Decreases related to settlements with tax authorities (0.4) 0.0 (54.7)
Decreases related to lapse of applicable statute of limitations (1.0) (0.7) (3.0)
Unrecognized tax benefit liabilities, end of period $ 89.3 $ 39.5 $ 30.4