Acquisitions and Joint Ventures Acquisitions and Joint Ventures (Narrative) (Details) $ in Millions	6 Months Ended
Jun. 30, 2019 USD ($)
Business Acquisition [Line Items]
Controlling Interest Ownership Percentage After Acquisition	80.00%
Payments to Acquire Interest in Joint Venture	$ 4,200
Joint Venture, Contingent Termination Fee	$ 100
KC-390 [Member]
Business Acquisition [Line Items]
Noncontrolling Interest Ownership Percentage After Acquisition	49.00%

Controlling Interest Ownership Percentage After Acquisition

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- Definition

Fee to be paid, contingent upon termination of joint venture agreement.

+ References

No definition available.

+ Details

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- Definition

Noncontrolling Interest Ownership Percentage After Acquisition

+ References

No definition available.

+ Details

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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

The cash outflow associated with the investment in or advances to an entity in which the reporting entity shares control of the entity with another party or group.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3213-108585

+ Details

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- Details

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