Income Taxes (Geographic Sources) (Details 1) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Geographic sources of pretax income
United States	$ 2,263	$ 1,988	$ 1,411
Foreign	221	226	180
Income from continuing operations before income tax provision	$ 2,484	$ 2,214	$ 1,591

Sum of operating profit and nonoperating income (expense) from continuing operations before income taxes, extraordinary items and cumulative effects of changes in accounting principles. Includes the portion attributable to noncontrolling interest.

No definition available.

+ Details

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- Definition

-- None. No documentation exists for this element. --

+ References

No definition available.

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

+ References

+ Details

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