Commitments and Contingencies (Tables)

12 Months Ended

Sep. 30, 2018

Commitments and Contingencies Disclosure [Abstract]

Schedule of Change in Asset Retirement Obligation

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

Balance at 30 September 2016		$119.9
Additional accruals	22.7
Liabilities settled	(4.1		)
Accretion expense	5.8
Currency translation adjustment	.4
Balance at 30 September 2017		$144.7
Additional accruals	43.8
Liabilities settled	(2.6		)
Accretion expense	7.2
Currency translation adjustment	(2.7		)
Balance at 30 September 2018		$190.4

Schedule of Unconditional Purchase Obligations Disclosure

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

2019		$851
2020	362
2021	342
2022	318
2023	326
Thereafter	5,461
Total		$7,660