Restructuring and Asset Related Charges Asset Impairments (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2016
Predecessor [Member]
Restructuring Cost and Reserve [Line Items]
Capitalized Computer Software, Gross		$ 435
Property, Plant, and Equipment, Fair Value Disclosure		0
Asset Impairment Charges		435
In Process Research and Development [Member] \| Restructuring and Asset Related Charges - Net [Member] \| Successor [Member]
Restructuring Cost and Reserve [Line Items]
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)	$ 85
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill), After Tax	66
Trade Names [Member] \| Predecessor [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment Charges		$ 158
Equity Method Investments [Member] \| Restructuring Charges [Member] \| Successor [Member]
Restructuring Cost and Reserve [Line Items]
Equity Method Investment, Other than Temporary Impairment	$ 41

Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill), After Tax

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- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
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- Definition

Amount before accumulated amortization of capitalized costs for computer software, including but not limited to, acquired and internally developed computer software.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 985
-SubTopic 20
-Section 50
-Paragraph 1
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- Definition

This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment.

+ References

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-SubTopic 10
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- Definition

Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
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-Name Accounting Standards Codification
-Topic 230
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- Definition

Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

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-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 1
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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.

+ References

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