Earnings Per Share (Basic and Diluted) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Net income from continuing operations	$ 100.7	$ 90.1	$ 196.2	$ 173.3
Loss from discontinued operations, net of income taxes	(0.3)	(0.2)	(0.7)	(0.4)
NET INCOME	$ 100.4	$ 89.9	$ 195.5	$ 172.9
Weighted average common shares outstanding used in calculating basic EPS	119.1	121.4	119.3	121.2
Effect of dilutive stock options	1.7	1.9	1.8	2.0
Weighted average common shares outstanding used in calculating diluted EPS	120.8	123.3	121.1	123.2
Basic EPS amounts:
Continuing operations	$ 0.85	$ 0.74	$ 1.64	$ 1.43
Discontinued operations	$ 0.00	$ 0.00	$ (0.01)	$ 0.00
Net income	$ 0.84	$ 0.74	$ 1.64	$ 1.43
Diluted EPS amounts:
Continuing operations	$ 0.83	$ 0.73	$ 1.62	$ 1.41
Discontinued operations	$ 0.00	$ 0.00	$ (0.01)	$ 0.00
Net income	$ 0.83	$ 0.73	$ 1.61	$ 1.40