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Goodwill - Summary of Changes in the Carrying Amount of Goodwill by Segment (Detail) $ in Millions | 3 Months Ended
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Mar. 31, 2019 USD ($)
Goodwill [Line Items] |
Beginning balance | $ 24,917
Goodwill reclassified as assets to held for sale | (28)
Translation differences | (67)
Ending balance | 24,822
North America [Member] |
Goodwill [Line Items] |
Beginning balance | 11,098
Goodwill reclassified as assets to held for sale | (23)
Translation differences | 8
Ending balance | 11,083
Europe [Member] |
Goodwill [Line Items] |
Beginning balance | 8,653
Goodwill reclassified as assets to held for sale | (5)
Translation differences | (117)
Ending balance | 8,531
International Markets [Member] |
Goodwill [Line Items] |
Beginning balance | 2,479
Translation differences | 41
Ending balance | 2,520
Other [Member] |
Goodwill [Line Items] |
Beginning balance | 2,687
Translation differences | 1
Ending balance | $ 2,688

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- Definition Goodwill reclassification. + References No definition available. + Details
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Balance Type: | credit
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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Balance Type: | debit
Period Type: | instant

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- Definition Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Balance Type: | na
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- Details
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Balance Type: |
Period Type: |

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- Details
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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