Commitments and Contingencies (Tables)

12 Months Ended

Sep. 30, 2017

Commitments and Contingencies Disclosure [Abstract]

Changes in Accrued Warranties and Related Costs

The following table shows changes in the Company’s accrued warranties and related costs for 2017, 2016 and 2015 (in millions):

	2017			2016			2015
Beginning accrued warranty and related costs	$	3,702		$	4,780		$	4,159
Cost of warranty claims	(4,322		)	(4,663		)	(4,401		)
Accruals for product warranty	4,454			3,585			5,022
Ending accrued warranty and related costs	$	3,834		$	3,702		$	4,780

Future Minimum Lease Payments Under Noncancelable Operating Leases

Future minimum lease payments under noncancelable operating leases having initial or remaining terms in excess of one year as of September 30, 2017, are as follows (in millions):

2018	$	1,223
2019	1,187
2020	1,108
2021	1,033
2022	871
Thereafter	4,123
Total	$	9,545

Future Payments Under Unconditional Purchase Obligations

Future payments under noncancelable Unconditional Purchase Obligations having a remaining term in excess of one year as of September 30, 2017, are as follows (in millions):

2018	$	1,798
2019	2,675
2020	1,626
2021	1,296
2022	1,268
Thereafter	14
Total	$	8,677