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Restructuring and Impairment Charges - Assets and classified as held-for-sale (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
	Jul. 01, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Disposal group
Restructuring charges		$ 8	$ 6		$ 31
Goodwill impairment	$ 0
Indefinite-lived intangible assets impairment	$ 0
Stockton, California and Lane Cove, Australia, PP&E | Disposal Group, Held for Sale, Not Discontinued Operations
Disposal group
Asset held for sale						$ 8
Stockton, California and Lane Cove, Australia, PP&E | Other assets | Disposal Group, Held for Sale, Not Discontinued Operations
Disposal group
Asset held for sale		2		$ 2
Stockton, California, PP&E | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Disposal group
Consideration for the sale of assets		$ 11		11
Gain on the sale of land and building				$ 5

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Amount classified as assets attributable to disposal group held for sale or disposed of.

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