Fair Value of Financial Investments (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Investments, fair value disclosure	$ 136
Estimate of Fair Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Estimated market value of long-term and short-term debt	2,800	$ 3,000
Carrying Value Reported Value Measurement
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Aggregate carrying value of long-term and short-term debt	$ 2,800	$ 2,800
ACProducts Preferred Stock
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Preferred stock, coupon rate, percentage until first anniversary issuance	8.00%
Preferred stock, coupon rate, percentage after the first anniversary until the second anniversary issuance	9.00%
Preferred stock, coupon rate, percentage after the second anniversary until the seventh anniversary issuance	10.00%
Preferred stock, percentage of coupon rate increase	5000.00%
Preferred stock, coupon rate, maximum percentage	15.00%
ACProducts Holding, Inc
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Preferred stock, liquidation preference, value	$ 150

Preferred Stock, Coupon Rate, Maximum Percentage

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- Definition

Preferred Stock, Coupon Rate, Percentage After The First Anniversary And Until The Second Anniversary Issuance

+ References

No definition available.

+ Details

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- Definition

Preferred Stock, Coupon Rate, Percentage After The Second Anniversary And Until The Seventh Anniversary Issuance

+ References

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- Definition

Preferred Stock, Coupon Rate, Percentage Until The First Anniversary Issuance

+ References

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- Definition

Preferred Stock, Percentage of Coupon Rate Increase

+ References

No definition available.

+ Details

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- Definition

Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

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- Definition

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

No definition available.

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- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

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- Definition

Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

+ References

No definition available.

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