Share-Based Compensation (Grants of Stock Options and RSUs) (Details) - $ / shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Stock Options [Member]
Equity awards, granted, in shares	1,020,535	1,259,344
Weighted average fair value per award, in dollars per share	$ 16.75	$ 17.09
RSUs [Member]
Equity awards, granted, in shares	189,546	242,104
Weighted average fair value per award, in dollars per share	$ 104.80	$ 100.70
Phantom Share Units (PSUs) [Member]
Equity awards, granted, in shares	259,920	306,352
Weighted average fair value per award, in dollars per share	$ 141.88	$ 110.57