Subsequent Events (Details) - USD ($) $ / shares in Units, shares in Millions							2 Months Ended	3 Months Ended		9 Months Ended	12 Months Ended		27 Months Ended
	Jan. 27, 2020	Oct. 28, 2019	Oct. 24, 2019	Jul. 25, 2019	Apr. 25, 2019	Jan. 29, 2019	Feb. 20, 2020	Mar. 31, 2020	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Mar. 31, 2020	Oct. 31, 2019	Jan. 31, 2018
Subsequent Event [Line Items]
Cash dividends declared per share of common stock (in dollars per share)			$ 0.19	$ 0.19	$ 0.19	$ 0.19
Subsequent Event
Subsequent Event [Line Items]
Cash dividends declared per share of common stock (in dollars per share)	$ 0.20
Shares repurchased (in shares)							6.7
Stock repurchased and retired during period, value							$ 179,800,000
Price paid per share							$ 23.68
Stock repurchased (in Shares)							7.6
Accelerated Share Repurchase Program
Subsequent Event [Line Items]
Shares repurchased (in shares)		6.4								11.6	29.3
Stock repurchase program, authorized amount		$ 200,000,000.0
Stock Repurchase Program 2018
Subsequent Event [Line Items]
Shares repurchased (in shares)											20.1	29.3
Stock repurchased and retired during period, value		$ 160,000,000.0							$ 50,000,000.0		$ 550,000,000.0	$ 750,000,000.0
Stock repurchased (in Shares)									2.1
Stock repurchase program, authorized amount														$ 3,000,000,000.0	$ 2,000,000,000.0
Stock Repurchase Program 2018 | Subsequent Event
Subsequent Event [Line Items]
Stock repurchase program, authorized amount							$ 1,500,000,000
Forecast | Subsequent Event
Subsequent Event [Line Items]
Stock repurchased and retired (in usd per share)								$ 24.44
Forecast | Accelerated Share Repurchase Program | Subsequent Event
Subsequent Event [Line Items]
Shares repurchased (in shares)								1.8					8.2