Consolidated Statements of Changes in Shareholders' Equity (Parentheticals) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Common Dividends (Per Share)	$ 0.80	$ 0.72	$ 0.62
Preferred Dividends (Per Share)	$ 42,500	$ 42,500	$ 42,500
Accounting Standards Update 2016-09 [Member]
Effect of adoption			$ (233)
Accounting Standards Update 2014-09 [Member]
Effect of adoption	$ 53
Effect of adoption, net of tax	$ (186)

New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification, Net Of Tax

No definition available.

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- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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- Definition

Represents the quantification of the effect of adopting the new accounting standard or change in accounting principle expected by the entity to have a significant effect on the entity's financial statements.

+ References

No definition available.

+ Details

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- Definition

Aggregate dividends paid during the period for each share of preferred stock outstanding.

+ References

No definition available.

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