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Depreciation and Amortization	6 Months Ended
Depreciation and Amortization	Jun. 30, 2016
Depreciation, Depletion and Amortization [Abstract]
Depreciation and Amortization	DEPRECIATION AND AMORTIZATION Depreciation and amortization expense, including discontinued operations, was $66 million and $68 million for the six-month periods ended June 30, 2016 and 2015, respectively.