Relationship with Former Parent and Related Entities - Summary of Amount Due to and from Related Parties (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Related Party Transactions [Abstract]
Related party receivable	$ 14	$ 64
Related party notes receivable	0	1
Related party payables	4	16
Related party short-term debt	2	1
Related party long-term debt	$ 12	$ 13

Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.

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-Name Accounting Standards Codification
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-Section S99
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Period Type:	instant

- Definition

Carrying amount as of the balance sheet date of obligations due all related parties. For classified balance sheets, represents the current portion of such liabilities (due within one year or within the normal operating cycle if longer).

+ References

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- Definition

Portion of the carrying amount as of the balance sheet date of obligations due all related parties that is payable after one year or beyond the normal operating cycle if longer.

+ References

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- Definition

The amount for notes payable (written promise to pay), due to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
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-Section 50
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-Publisher FASB
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-Section S99
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-Subparagraph (SX 210.4-08.(k)(1))
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-Subparagraph (SX 210.5-02.19(a)(5))
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- Definition

Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due after 1 year (or 1 business cycle).

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
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-Section S99
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No definition available.

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