Earnings Per Share (Narrative) (Details) shares in Millions	6 Months Ended
	Jun. 30, 2020 shares
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from earnings per share calculation	3.3
Restricted Stock Units (RSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from earnings per share calculation	0.3
Performance Stock Units (PSUs) [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securities excluded from earnings per share calculation	0.1