Depreciation and Amortization	6 Months Ended
Jun. 30, 2019
Depreciation, Depletion and Amortization [Abstract]
Depreciation and Amortization	DEPRECIATION AND AMORTIZATION Depreciation and amortization expense was $82 million and $74 million for the six-month periods ended June 30, 2019 and 2018, respectively.

The entire disclosure for depreciation and amortization expense.

No definition available.

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