Number of shares that have been repurchased and retired during the period.

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Period Type:	duration

Note 14 - Accelerated Share Repurchase (Details Textual) - USD ($) $ / shares in Units, shares in Millions, $ in Millions	Jan. 17, 2020	May 07, 2019	May 02, 2019
Stock Repurchase Program, Authorized Amount			$ 50
Accelerated Stock Repurchase [Member]
Stock Repurchase Program, Authorized Amount		$ 30	30
Accelerated Stock Repurchase [Member] \| Morgan Stanley & Co., LLC [Member]
Stock Repurchased and Retired During Period, Shares (in shares)	0.6
Accelerated Share Repurchases, Final Price Paid Per Share (in dollars per share)	$ 50.78
Repurchase from Open Market [Member]
Stock Repurchase Program, Authorized Amount			$ 20