Subsequent Events - (Details) - USD ($)	Jul. 31, 2021	Jul. 29, 2021	Jun. 30, 2021	Apr. 30, 2021	Feb. 28, 2021	Dec. 31, 2015
Subsequent Event [Line Items]
Stock repurchase program, additional authorized amount				$ 500,000,000.0	$ 300,000,000.0
Stock repurchase program, authorized amount			$ 2,000,000,000.0			$ 1,200,000,000
Stock repurchase program, remaining authorized repurchase amount			$ 300,000,000
Subsequent Event
Subsequent Event [Line Items]
Stock repurchase program, additional authorized amount		$ 800,000,000
Stock repurchase program, remaining authorized repurchase amount	$ 231,000,000