Goodwill Impairment and Carrying Value (Details) - USD ($)	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Feb. 12, 2010
Goodwill and Other Intangible Assets and Liabilities [Abstract]
Goodwill	$ 14,851,000,000	$ 14,851,000,000		$ 14,800,000,000
Incurred impairment losses related to Goodwill	0	0	$ 0
Accumulated impairment losses related to Goodwill	$ 0	$ 0

Goodwill and Other Intangible Assets and Liabilities [Abstract]

No definition available.

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- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
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- Definition

Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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