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Supplemental Financial Information (Detail) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Inventories
Finished goods	$ 11	$ 17
Service parts	6	9
Total inventories	17	26
Deferred revenue
Current deferred revenue	530	552
Long-term deferred revenue	11	27
Total deferred revenue	$ 541	$ 579

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