Earnings Per Share - Schedule Of Anti-Dilutive Options and Awards (Details) - $ / shares shares in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Weighted average exercise price of stock options excluded from the calculation of diluted EPS (in dollars per share)	$ 21.21	$ 23.67	$ 21.36	$ 24.43
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options excluded from the calculation of diluted EPS (in shares)	1,883	2,251	2,413	2,316
Other Equity Awards
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Stock options excluded from the calculation of diluted EPS (in shares)	2,094	1,605	1,815	538