Annual report pursuant to Section 13 and 15(d)

INCOME TAXES - Reconciliation of Federal Statutory Tax Rate to Consolidated Effective Tax Rate (Details)

v3.10.0.1
INCOME TAXES - Reconciliation of Federal Statutory Tax Rate to Consolidated Effective Tax Rate (Details)
12 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2016
Income Tax Disclosure [Abstract]      
Federal statutory tax rate 24.50% 35.00% 35.00%
Effect of state income taxes, net of federal deduction 2.20% 1.40% (0.60%)
Foreign taxes less than federal statutory rate 1.40% (7.20%) (3.50%)
Share-based compensation (0.60%) (1.20%) 0.00%
U.S. manufacturing incentive (1.30%) (1.80%) (0.90%)
Tax credits (2.70%) (2.60%) 0.90%
Tax deductible basis difference (1.50%) 0.00% 0.00%
Transition tax 9.00% 0.00% 0.00%
U.S. statutory tax rate change on temporary differences (38.70%) 0.00% 0.00%
Other (1.60%) (0.40%) (0.40%)
Effective tax rate (9.30%) 23.20% 30.50%