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Contingencies and Litigation - Other Contingencies (Details) $ in Millions	Mar. 31, 2019 USD ($)
Surety Bond [Member]
Guarantor Obligations [Line Items]
Maximum exposure, undiscounted	$ 636
Contractual and Corporate Obligations Guarantee [Member]
Guarantor Obligations [Line Items]
Maximum exposure, undiscounted	$ 266

X

- 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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Balance Type:	na
Period Type:	duration

X

- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248

+ Details

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Period Type:	instant

X

- Details

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X

- Details

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