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Goodwill - Additional Information (Detail) $ in Billions	6 Months Ended
	Jun. 30, 2020 USD ($)
Goodwill [Line Items]
Percentage difference between fair value and carrying value in respect of goodwill	15.00%
International Markets [Member]
Goodwill [Line Items]
Decrease in estimated difference between fair value and carrying value, percent	43.00%
Europe [Member]
Goodwill [Line Items]
Decrease in estimated difference between fair value and carrying value, percent	34.00%
North America [Member]
Goodwill [Line Items]
Decrease in estimated difference between fair value and carrying value, percent	20.00%
Terminal Value Percentage Increase Or Decrease Threshold	1.61%
Increase Or Decrease In The Discount Rate In Percentage Terms Threshold Limits	10.31%
North America [Member] | Maximum [Member]
Goodwill [Line Items]
Terminal Value Percentage Increase Or Decrease Threshold	1.11%
Increase Or Decrease In The Discount Rate In Percentage Terms Threshold Limits	10.81%
Goodwill impairment	$ 1.1
North America [Member] | Minimum [Member]
Goodwill [Line Items]
Terminal Value Percentage Increase Or Decrease Threshold	0.50%
Increase Or Decrease In The Discount Rate In Percentage Terms Threshold Limits	0.50%
Percentage difference between fair value and carrying value in respect of goodwill	13.00%
Medis [Member]
Goodwill [Line Items]
Decrease in estimated difference between fair value and carrying value, percent	147.00%
TAPI [Member]
Goodwill [Line Items]
Decrease in estimated difference between fair value and carrying value, percent	30.00%

X

- Definition

Fair Value Percentage Decrease In Goodwill Impairment

+ References

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- Definition

Difference In the value of goodwill in percentage terms between the carrying value and the faitr value

+ References

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Percentage Increase or Decrease In The Discount Rate

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- Definition

Percentage Increase or Decrease In The Terminal Value Of Growth Rate

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- Definition

Amount of loss from the write-down 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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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.

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