The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3179-108585

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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.

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Related Party (Summary of Vantiv Holding, LLC Sales Transactions) (Detail) - USD ($) $ in Millions	3 Months Ended									12 Months Ended
	Mar. 31, 2019	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2015	Jun. 30, 2014	Sep. 30, 2013	Jun. 30, 2013	Dec. 31, 2012	Mar. 31, 2012	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2009
Related Party Transactions
Gain on sale of Worldpay, Inc. shares	$ 562	$ 205	$ 414							$ 562	$ 205	$ 1,037
Equity Method Investment, Ownership Percentage	0.00%	3.30%	4.90%										8.60%
Worldpay Holding, LLC
Related Party Transactions
Gain on sale of Worldpay, Inc. shares				$ 331	$ 125	$ 85	$ 242	$ 157	$ 115
Equity Method Investment, Ownership Percentage				18.30%	22.80%	25.10%	27.70%	33.10%	39.00%					49.00%