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Supplemental Financial Information - Inventories and Deferred Revenue (Detail) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Inventories
Finished goods	$ 5	$ 5
Service parts	2	3
Total inventories	7	8
Deferred revenue
Current deferred revenue	634	589
Long-term deferred revenue	4	8
Total deferred revenue	$ 638	$ 597

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