Quarterly report pursuant to Section 13 or 15(d)

Other Comprehensive Income (Loss) - Schedule of changes in accumulated other comprehensive income (loss) (Details)

v3.20.1
Other Comprehensive Income (Loss) - Schedule of changes in accumulated other comprehensive income (loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 31, 2019
Oct. 01, 2019
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]          
Balance at the beginning of the period     $ (140.6)    
Other comprehensive income before reclassifications          
Before tax amount     (15.9) $ (20.5)  
Tax benefit     0.6 2.6  
After tax amount     (15.3) (17.9)  
Amounts reclassified from accumulated other comprehensive loss(1)     3.0 0.5  
Total changes in other comprehensive loss, net of tax $ (32.1) $ (7.5) (12.3) (17.4)  
Balance at the end of the period (158.3)   (158.3)    
Pension and Postretirement          
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]          
Balance at the beginning of the period     (62.3) (41.0)  
Other comprehensive income before reclassifications          
Before tax amount     0.0 0.0  
Tax benefit     0.0 0.0  
After tax amount     0.0 0.0  
Amounts reclassified from accumulated other comprehensive loss(1)     2.5 0.5  
Total changes in other comprehensive loss, net of tax     2.5 0.5  
Reclassification of certain income tax effects         $ (6.0)
Balance at the end of the period (65.8) (40.5) (65.8) (40.5)  
Currency Translation          
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]          
Balance at the beginning of the period     (64.7) (44.1)  
Other comprehensive income before reclassifications          
Before tax amount     (12.3) (9.7)  
Tax benefit     0.0 0.0  
After tax amount     (12.3) (9.7)  
Amounts reclassified from accumulated other comprehensive loss(1)     0.0 0.0  
Total changes in other comprehensive loss, net of tax     (12.3) (9.7)  
Reclassification of certain income tax effects         0.0
Balance at the end of the period (77.0) (53.8) (77.0) (53.8)  
Net Unrealized Gain (Loss) on Derivative Instruments          
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]          
Balance at the beginning of the period     (13.6) 0.9  
Other comprehensive income before reclassifications          
Before tax amount     (3.0) (11.0)  
Tax benefit     0.6 2.6  
After tax amount     (2.4) (8.4)  
Amounts reclassified from accumulated other comprehensive loss(1)     0.5 0.0  
Total changes in other comprehensive loss, net of tax     (1.9) (8.4)  
Reclassification of certain income tax effects         0.0
Balance at the end of the period (15.5) (7.5) (15.5) (7.5)  
Total Attributable to Hillenbrand, Inc.          
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]          
Balance at the beginning of the period     (140.6) (84.2)  
Other comprehensive income before reclassifications          
Before tax amount     (15.3) (20.7)  
Tax benefit     0.6 2.6  
After tax amount     (14.7) (18.1)  
Amounts reclassified from accumulated other comprehensive loss(1)     3.0 0.5  
Total changes in other comprehensive loss, net of tax     (11.7) (17.6)  
Reclassification of certain income tax effects         $ (6.0)
Balance at the end of the period (158.3) (101.8) (158.3) (101.8)  
Noncontrolling Interests          
Other comprehensive income before reclassifications          
Before tax amount     (0.6) 0.2  
Tax benefit     0.0 0.0  
After tax amount     (0.6) 0.2  
Amounts reclassified from accumulated other comprehensive loss(1)     0.0 0.0  
Total changes in other comprehensive loss, net of tax $ (0.5) $ 0.0 $ (0.6) $ 0.2