Stockholders' Equity (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended
	Apr. 26, 2021	May 27, 2020	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Class of Stock [Line Items]
Preferred Stock, Shares Authorized			50,000,000		50,000,000
Preferred Stock, Shares Issued			10,062,500		10,062,500
Payments of Dividends			$ 14	$ 0
Common Stock, Shares Authorized			2,000,000,000		2,000,000,000
Common Stock, Par or Stated Value Per Share			$ 0.01		$ 0.01
5.50% MCPS, Series A [Member]
Class of Stock [Line Items]
Preferred Stock, Shares Issued		10,062,500
Net proceeds from issuance of preferred stock in connection with public offering		$ 975
Preferred Stock, Dividend Rate, Percentage			5.50%
Preferred Stock, Liquidation Preference Per Share		$ 100	$ 100
Preferred Stock, Liquidation Preference, Value			$ 1,006
Preferred Stock, Dividends, Per Share, Cash Paid			$ 1.375
5.50% MCPS, Series A [Member] | Minimum [Member]
Class of Stock [Line Items]
Convertible Preferred Stock, Terms of Conversion			2.3834
5.50% MCPS, Series A [Member] | Maximum [Member]
Class of Stock [Line Items]
Convertible Preferred Stock, Terms of Conversion			2.9197
5.50% MCPS, Series A [Member] | Subsequent Event [Member]
Class of Stock [Line Items]
Preferred Stock, Dividends Per Share, Declared	$ 1.375