Information by Operating Segment - Reconciliation of Consolidated Net Economic Earnings to Consolidated Net Income (Details) - USD ($) $ in Millions	3 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Segment Reporting [Abstract]
Net Income	$ 55.7	$ 88.9
Fair value and timing adjustments	3.7	(16.0)
Income tax adjustments	3.2	4.0
Net Economic Earnings	$ 62.6	$ 76.9

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details