Stockholders' Equity (Dividends) (Details) - USD ($) $ / shares in Units, $ in Millions	Jul. 22, 2021	Apr. 22, 2021	Jan. 21, 2021	Oct. 15, 2020	Jul. 16, 2020	Apr. 15, 2020	Jan. 23, 2020	Oct. 17, 2019
Share-based Payment Arrangement [Abstract]
Dividend per Share	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.08
Total of Cash Dividends Declared	$ 12	$ 12	$ 12	$ 12	$ 12	$ 12	$ 13	$ 13

Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding.

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