Exercise price per share or per unit of warrants or rights outstanding.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(i)(4))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
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-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

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Amount of consideration received by subsidiary or equity investee in exchange for shares of stock issued or sold. Includes amount of cash received, fair value of noncash assets received, and fair value of liabilities assumed by the investor.

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The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

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Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

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- Definition

Amount of stock repurchase plan authorized.

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- Definition

The aggregate liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
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- Definition

Preferred Stock Issued During Period, Shares, New Shares

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Preferred Stock Liquidation Preference Percentage

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Stockholders Equity [Line Items]

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Stockholder's Equity - Narrative (Details) - USD ($)	1 Months Ended		12 Months Ended
Stockholder's Equity - Narrative (Details) - USD ($)	Jul. 31, 2018	Jul. 31, 2017	Dec. 31, 2019	Feb. 28, 2019	Dec. 14, 2018	Dec. 31, 2011
Stockholders Equity [Line Items]
Class of warrant or right, exercise price of warrants or rights (in usd per share)			$ 7.00
Class of warrant or right, number of securities called by warrants or rights (in shares)			10,000,000
Number of shares issued in transaction (in shares)		11,000,000
2018 Program
Stockholders Equity [Line Items]
Stock repurchase program authorized amount					$ 1,000,000,000
2019 Program
Stockholders Equity [Line Items]
Stock repurchase program authorized amount				$ 1,500,000,000
Convertible Preferred Stock
Stockholders Equity [Line Items]
Proceeds from issuance of preferred stock, net of issuance costs (in shares)			75,000
Temporary equity, liquidation preference (in usd per share)			$ 1,000
Class of warrant or right, exercise price of warrants or rights (in usd per share)			$ 7.00
Class of warrant or right, number of securities called by warrants or rights (in shares)			10,000,000
Preferred stock, liquidation preference, percentage						4.00%
Offered Directly By The Company
Stockholders Equity [Line Items]
Number of shares issued in transaction (in shares)		5,000,000,000,000
Sale of stock, price per share (in usd per share)		$ 60.50
Gross proceeds received		$ 290,000,000
Gross proceeds received net of fees and expenses	$ 349,000,000	$ 288,000,000
Offered In Connection With Forward Sale Agreements
Stockholders Equity [Line Items]
Number of shares issued in transaction (in shares)	6,000,000,000,000	6,000,000,000,000