Share-Based Compensation Stock Options (Details) (USD $) In Millions, except Share data, unless otherwise specified			9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Stock Options [Member]	Dec. 31, 2012 Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Jan. 01, 2013	1,525,000	1,540,000	1,540,000
Granted			0
Exercise			(3,000)
Forfeited			(12,000)
Outstanding, Sept. 30, 2013	1,525,000	1,540,000	1,525,000
Outstanding, Jan. 01, 2013			$ 42.61	$ 42.61
Granted			$ 0.00
Exercise			$ 42.61
Forfeited			$ 42.61
Outstanding, Sept. 30, 2013			$ 42.61	$ 42.61
Weighted Average Remaining Contractual Term (years)			8 years 5 months
Options Exercisable			305,000
Intrinsic Value			$ 11.2