Commitments and Contingencies (Tables)

12 Months Ended

Sep. 30, 2023

Commitments and Contingencies Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

Changes to the carrying amount of our asset retirement obligations were as follows:

Balance at 30 September 2021	$269.6
Additional accruals	17.9
Liabilities settled	(7.8)
Accretion expense	11.1
Currency translation adjustment	(16.1)
Balance at 30 September 2022	$274.7
Additional accruals	20.4
Liabilities settled	(8.8)
Accretion expense	11.4
Currency translation adjustment	(0.4)
Balance at 30 September 2023	$297.3

Schedule of Unconditional Purchase Obligations Disclosure

We are obligated to make future payments under unconditional purchase obligations as summarized below:

2024	$6,356
2025	2,673
2026	1,321
2027	699
2028	575
Thereafter	4,494
Total	$16,118