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Acquisitions (Narrative) (Details) - USD ($) $ in Millions | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Apr. 30, 2016 | Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016
Business Acquisition [Line Items] |  |  |  |
Acquisitions, net of cash acquired |  | $ 9 | $ 23 |
Sage Products |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total consideration | $ 2,875 |  |  |
Goodwill, Purchase Accounting Adjustments |  | 30 |  |
Physio Acquisition |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total consideration | 1,299 |  |  |
Goodwill, Purchase Accounting Adjustments |  | 19 |  |
Acquisitions, net of cash acquired | $ 1,299 |  |  |
Series of Individually Immaterial Business Acquisitions [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total consideration |  | 12 |  | $ 356
Goodwill, Purchase Accounting Adjustments |  | $ 11 |  |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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- Definition Amount of increase (decrease) from adjustments after acquisition date under purchase accounting of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 25 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=73531572&loc=d3e961-128460 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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