Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 26, 2020	Sep. 28, 2019	Sep. 26, 2020	Sep. 28, 2019
Other comprehensive income (loss), income tax expense	$ 2	$ 0	$ 3	$ 0
Products
Sales to affiliates	226	339	817	1,017
Services
Sales to affiliates	$ 4	$ 5	$ 16	$ 13

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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+ Details