Stockholders' Equity - Stock Repurchase Program (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 09, 2019	Dec. 01, 2018
Accelerated Share Repurchases [Line Items]
Treasury Stock, Shares	373,034,000
Stock Repurchased During Period, Shares	222,060,000
Stock repurchase, average cost per share (in USD per share)	$ 108.64
Treasury Stock, Value, Acquired, Par Value Method	$ 24.1
2018 Stock Repurchase Program [Member] [Member]
Accelerated Share Repurchases [Line Items]
Common stock repurchase, authorized amount	$ 75.9		$ 100.0
2019 Stock Repurchase Program [Member]
Accelerated Share Repurchases [Line Items]
Common stock repurchase, authorized amount		$ 100.0