The increase in intangible assets and goodwill resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Intangible assets and goodwill]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The decrease in intangible assets and goodwill resulting from classification as held for sale or inclusion in a disposal group classified as held for sale. [Refer: Disposal groups classified as held for sale [member]; Intangible assets and goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The increase (decrease) in intangible assets and goodwill resulting from the net exchange differences arising when the financial statements are translated from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Intangible assets and goodwill]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The amount of intangible assets and goodwill held by the entity. [Refer: Goodwill; Intangible assets other than goodwill]

+ References

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Goodwill - Text Details (Detail) € in Millions	12 Months Ended
Goodwill - Text Details (Detail) € in Millions	Dec. 31, 2018 EUR (€)	Dec. 31, 2017 EUR (€)	Dec. 31, 2016 EUR (€)
Aging & Caregiving [member]
Goodwill - Text Details (Detail) [Line Items]
Sensitivity pre-tax discount rate	300
Sensitivity compound long-term sales growth		(730)
Sensitivity terminal value		(39.00%)
Population Insights & Care [member]
Goodwill - Text Details (Detail) [Line Items]
Sensitivity pre-tax discount rate	10
Sensitivity compound long-term sales growth	(30)
Acquisitions and divestments [Domain] \| Population Health Management [Member]
Goodwill - Text Details (Detail) [Line Items]
Sensitivity terminal value		(3.00%)
Goodwill [member]
Goodwill - Text Details (Detail) [Line Items]
Acquisitions through business combinations, intangible assets and goodwill	€ 465	€ 1,548
Increase (decrease) through net exchange differences, intangible assets and goodwill	310	(836)
Decrease through classified as held for sale, intangible assets and goodwill	3	1,878
Intangible assets and goodwill	8,503	7,731	€ 8,898
Goodwill [member] \| Population Health Management [Member]
Goodwill - Text Details (Detail) [Line Items]
Intangible assets and goodwill	207
Goodwill [member] \| Aging & Caregiving [member]
Goodwill - Text Details (Detail) [Line Items]
Intangible assets and goodwill	43
Goodwill [member] \| EPDSolutionsLtd[Member]
Goodwill - Text Details (Detail) [Line Items]
Acquisitions through business combinations, intangible assets and goodwill	262
Goodwill [member] \| Remaining acquisitions (excluding EPD) [Member]
Goodwill - Text Details (Detail) [Line Items]
Acquisitions through business combinations, intangible assets and goodwill	€ 203
Goodwill [member] \| Remaining acquisitions (excluding Spectranetics) [Member]
Goodwill - Text Details (Detail) [Line Items]
Acquisitions through business combinations, intangible assets and goodwill		293
Goodwill [member] \| The Spectranetics Corporation [Member]
Goodwill - Text Details (Detail) [Line Items]
Acquisitions through business combinations, intangible assets and goodwill		€ 1,255