Shareholders' Equity Share repurchase (Details) - $ / shares shares in Millions						12 Months Ended
	Jan. 23, 2020	Oct. 24, 2019	Jul. 25, 2019	Apr. 25, 2019	Jan. 24, 2019	Dec. 31, 2019
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Declared		$ 0.28	$ 0.28	$ 0.28	$ 0.28
Treasury Stock, Shares, Acquired						1.5
Treasury Stock Acquired, Average Cost Per Share						$ 35.00
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased						1.4
Subsequent Event [Member]
Class of Stock [Line Items]
Common Stock, Dividends, Per Share, Declared	$ 0.28