Common Stock, Shares, Outstanding, Including Nonvested Stock Awards

No definition available.

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- Definition

Employee Service Share-Based Compensation, Nonvested Awards, Compensation Cost Expected To Be Expensed In Next Twelve Months, Percentage

+ References

No definition available.

+ Details

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- Definition

Share-Based Compensation Arrangement By Share-Based Payment Award, Fair Value Assumptions, Forfeiture Rate

+ References

No definition available.

+ 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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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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Stockholders' Equity - Additional Information (Details) - USD ($) shares in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Feb. 29, 2016
Class of Stock [Line Items]
Common shares outstanding plus underlying outstanding stock awards	504
Net unrecognized compensation cost related to unvested stock-based compensation arrangements	$ 6,000,000,000
Compensation cost expected to be expensed in next twelve months, percentage	50.00%
Net unrecognized compensation cost related to unvested stock-based compensation arrangements, weighted average recognition period (in years)	1 year 1 month
Estimated forfeiture rate	28.00%	28.00%
February 2016 Program
Class of Stock [Line Items]
Stock repurchase, authorized amount			$ 5,000,000,000