Maturity period of short term investment maximum.

No definition available.

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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- Definition

Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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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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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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- Definition

Amount of stockholders' equity (deficit), net of receivables from officers, directors, owners, and affiliates of the entity, attributable to both the parent and noncontrolling interests. Amount excludes temporary equity. Alternate caption for the concept is permanent equity.

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Accounting Policies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Jan. 01, 2020	Dec. 31, 2019	Dec. 31, 2018
Significant Accounting Policies [Line Items]
Cumulative effect of accounting change	$ 5,047	$ 5,665		$ 6,269	$ 4,972
Operating lease liability	182			180
Operating lease right-of-use asset	$ 162			158
Weighted average common shares adjustment related to stock-based compensation (shares)	0	1,300,000
Anti-dilutive potential common shares related to stock-based compensation plans (shares)	800,000	0
Maturities of short term investments	3 months
Retained Earnings
Significant Accounting Policies [Line Items]
Cumulative effect of accounting change	$ 3,616	$ 3,875		$ 4,009	$ 3,588
Cumulative effect adjustment in period of adoption \| Retained Earnings \| Accounting Standards Update 2016-13
Significant Accounting Policies [Line Items]
Cumulative effect of accounting change	$ 7		$ 7