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Store Closures	12 Months Ended
	Dec. 31, 2017
Store Closures
Store Closures	6 Store Closures In December 2016, the Company announced an enterprise streamlining initiative designed to reduce costs and enhance operating efficiencies to allow the Company to be more competitive in the current health care environment. In connection with the enterprise streamlining initiative, the Company announced its intention to rationalize the number of retail stores by closing approximately 70 underperforming stores during the year ending December 31, 2017. During the year ended December 31, 2017, the Company closed 71 retail stores and recorded charges of $215 million within operating expenses in the Retail/LTC Segment. The charges are primarily comprised of provisions for the present value of noncancelable lease obligations. The noncancelable lease obligations associated with stores closed during the year ended December 31, 2017 extend through the year 2039.

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The entire disclosure for restructuring and related activities. Description of restructuring activities such as exit and disposal activities, include facts and circumstances leading to the plan, the expected plan completion date, the major types of costs associated with the plan activities, total expected costs, the accrual balance at the end of the period, and the periods over which the remaining accrual will be settled.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4)
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-Name Accounting Standards Codification
-Topic 420
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-Section S99
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

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