EPS impact of Convertible Debt (Details) (3.25% Senior Subordinated Convertible Notes Due 2024 [Member], USD $)
Share data in Millions |
12 Months Ended | |||||||||
---|---|---|---|---|---|---|---|---|---|---|
Dec. 31, 2010
|
Nov. 09, 2006
|
Dec. 31, 2010
$40.20
|
Dec. 31, 2010
$41.20
|
Dec. 31, 2010
$45.00
|
Dec. 31, 2010
$50.00
|
Dec. 31, 2010
$55.00
|
Dec. 31, 2010
$60.00
|
Dec. 31, 2010
$65.00
|
Dec. 31, 2010
$70.00
|
|
Schedule of Convertible Debt Potential Share Increase [Line Items] | ||||||||||
Principal Outstanding | $ 329,300,000 | |||||||||
Conversion Price per Share | 40.20 | 40.20 | ||||||||
Trigger Price | $ 48.24 | $ 48.24 | ||||||||
Total Potential Shares | 0 | 0.2 | 0.9 | 1.6 | 2.2 | 2.7 | 3.1 | 3.5 |