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Acquisitions (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 01, 2019	Dec. 31, 2019	Dec. 31, 2017	Dec. 31, 2018
Acquisitions
Payment for acquisition, net of cash acquired		$ 42	$ 17
Cash acquired from acquisition		4
Goodwill		801	803	$ 791
Pre-tax acquisition costs		3	$ 4
Western Polymer
Acquisitions
Payment for acquisition, net of cash acquired	$ 42
Cash acquired from acquisition	$ 4
Goodwill		13
Tangible assets, net		$ 29

X

- Definition

Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The amount of property, plant, and equipment recognized as of the acquisition date.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
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- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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