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Basis Of Presentation Adoption of New Accounting Standards (Details) $ in Millions	Mar. 31, 2018 USD ($)
Accounting Standards Update 2016-16 [Member] | Retained Earnings [Member]
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (695)

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

+ References

No definition available.

+ Details

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- Details

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- Details

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