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Accumulated Other Comprehensive Income Details 2 (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Net Income (Loss) Attributable to Parent	$ 93,304	$ 92,466	$ 375,972
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	28,890	23,878	$ 89,592
Comprehensive Income (Loss), Net of Tax, Attributable to Parent	$ 122,194	$ 116,344

X

- Definition

Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

+ References

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax of other comprehensive income (loss) attributable to parent entity.

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