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Term used in valuation model

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Unrecognized cost of unvested share-based compensation awards.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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Date the equity-based award expires, in CCYY-MM-DD format.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of shares issued which are neither cancelled nor held in the treasury.

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Stock Option Plans and Stock Based Compensation Level 4 (Details) - Summary of Existing Stock Based Compensation Plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2016	Dec. 31, 2017
Stock based compensation plans [Line Items]
Term used in valuation model	30 years	30 years
Stock-based compensation expense	$ 1
shares outstanding	82,556,847		82,556,847
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized	$ 17
Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan - Tranche B & C [Member]
Stock based compensation plans [Line Items]
Aggregate Grant Date Fair Value		$ 2
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	22 years	21 years 4 months 24 days
Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan - Tranche A Options [Member]
Stock based compensation plans [Line Items]
Aggregate Grant Date Fair Value	$ 2	$ 6
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate		2.17%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term		6 years 3 months
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate		37.50%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate		0.00%
Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan [Member]
Stock based compensation plans [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Date	Feb. 01, 2021
Option Term	10 years
Number of Shares Authorized	20,800,000
Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan - Tranche B & C Options [Member]
Stock based compensation plans [Line Items]
Aggregate Grant Date Fair Value		$ 3
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Term	6 years 2 months 12 days	9 years 2 months 12 days
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate	0.00%	0.00%
Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan - Tranche A RDU's [Member] [Member] [Member]
Stock based compensation plans [Line Items]
Aggregate Grant Date Fair Value	$ 4	$ 4
Minimum [Member] \| Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan - Tranche B & C Options [Member]
Stock based compensation plans [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	0.11%	0.16%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	28.10%	34.60%
Maximum [Member] \| Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan - Tranche B & C Options [Member]
Stock based compensation plans [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Risk Free Interest Rate	2.06%	3.44%
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate	35.50%	41.70%
Tranche A Options [Member] \| Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan [Member]
Stock based compensation plans [Line Items]
shares outstanding	1,999,720
Tranche A RDUs [Member] \| Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan [Member]
Stock based compensation plans [Line Items]
shares outstanding	0
Tranche B Options [Member] \| Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan [Member]
Stock based compensation plans [Line Items]
shares outstanding	970,865
Tranche B RDUs [Member] \| Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan [Member]
Stock based compensation plans [Line Items]
shares outstanding	323,619
Tranche C Options [Member] \| Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan [Member]
Stock based compensation plans [Line Items]
shares outstanding	970,865
Tranche C RDU's [Member] \| Momentive Performance Materials Holdings LLC 2011 Equity Incentive Plan [Member]
Stock based compensation plans [Line Items]
shares outstanding	323,619