Depreciation and Amortization	6 Months Ended
Jun. 30, 2018
Depreciation, Depletion and Amortization [Abstract]
Depreciation and Amortization	DEPRECIATION AND AMORTIZATION Depreciation and amortization expense was $74 million and $64 million for the six-month periods ended June 30, 2018 and 2017, respectively.

The entire disclosure for depreciation and amortization expense.

No definition available.

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