Planned Divestiture of Latin American Business - Components of Held for Sale Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Sep. 30, 2020
Assets held for sale
Cash and cash equivalents	$ 36	$ 0
Disposal Group, Held-for-sale, Not Discontinued Operations | Latin American Business
Assets held for sale
Cash and cash equivalents	36
Accounts receivable, less allowance of $3	83
Other current assets	75
Property, plant and equipment, net accumulated depreciation of $445	1,545
Goodwill	718
Customer relationships and other intangibles, net	129
Other non-current assets	71
Total assets held for sale	2,657
Liabilities held for sale
Accounts payable	76
Salaries and benefits	22
Income and other taxes	32
Current portion of deferred revenue	28
Other current liabilities	10
Deferred income taxes, net	116
Other non-current liabilities	128
Total liabilities held for sale	412
Allowance for doubtful accounts	3
Accumulated depreciation	$ 445