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Intangible Assets (Schedule of Finite-Lived Intangible Assets) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Intangible Assets
Cost	$ 19,141	$ 18,564
Accumulated Amortization	(5,213)	(2,766)
Net	13,928	15,798
Trademarks
Intangible Assets
Cost	44	43
Accumulated Amortization	0	0
Net	44	43
Customer relationships and other
Intangible Assets
Cost	18,586	18,018
Accumulated Amortization	(5,024)	(2,681)
Net	13,562	15,337
Trademarks
Intangible Assets
Cost	511	503
Accumulated Amortization	(189)	(85)
Net	$ 322	$ 418

X

- Definition

Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
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- Definition

Amount before accumulated amortization of intangible assets, excluding goodwill.

+ References

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- Definition

Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges.

+ References

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-Publisher FASB
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-Topic 350
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