Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

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.

+ Details

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- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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+ Details

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- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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Acquisition (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended								8 Months Ended	12 Months Ended
Acquisition (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Business Acquisition [Line Items]
Revenues	$ 4,135	$ 5,361	$ 3,517	$ 4,425	$ 4,344	$ 4,638	$ 4,310	$ 3,965		$ 17,439	$ 17,258	$ 16,424
Net income (loss)	$ 143	$ 398	$ (94)	$ 52	$ 431	$ (161)	$ 363	$ 252		$ 499	$ 886	$ 1,641
Liberty Transaction [Member]
Business Acquisition [Line Items]
Acquisition agreement date										May 01, 2018
Capital stock acquired, percent									100.00%			100.00%
Acquisition related costs												$ 85
Revenues									$ 1,500
Net income (loss)									$ 36