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Depreciation and Amortization | 6 Months Ended
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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.

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- Definition The entire disclosure for depreciation and amortization expense. + References No definition available. + Details
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- References No definition available. + Details
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