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Parent Company (Details Textuals) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Parent Company Details (Textuals) [Abstract]
Gain on business travel joint venture transaction	$ 0	$ 0	$ 630

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- Definition

Gain on business travel joint venture, before tax

+ References

No definition available.

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- References

No definition available.

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