Other Other	6 Months Ended
Jun. 30, 2013
Other [Abstract]
Other Item Disclosure [Text Block]	Other Debt Short-term debt at June 30, 2013 consisted entirely of securities lending transactions. During the six months ended June 30, 2013, we made principal payments of $30.0 million on our senior secured notes issued by Northwind Holdings, LLC. In January 2013, we purchased and retired the outstanding principal of $62.5 million on our senior secured notes issued by Tailwind Holdings, LLC, resulting in a before-tax gain of $4.0 million. Income Tax At June 30, 2013, we had a liability of $23.6 million for unrecognized tax benefits, $15.0 million of which is associated with deferred tax assets. During the second quarter of 2013, we incurred a liability for unrecognized tax benefits of $4.0 million. The interest and penalties expense (benefit) related to unrecognized tax benefits in our consolidated statements of income was $0.1 million and $0.2 million for the three and six months ended June 30, 2013, respectively, and $(11.0) million and $(10.5) million for the three and six months ended June 30, 2012, respectively. In July 2013, an income tax rate reduction was enacted which reduces the tax rate in the U.K. from the current rate of 23 percent to 21 percent effective April 2014 and 20 percent effective April 2015. We are required to adjust deferred tax assets and liabilities through income on the date of enactment of a rate change. We will record a reduction of approximately $4.0 million to $7.0 million in our income tax expense in the third quarter of 2013 to reflect the impact of the rate changes on our net deferred tax liability related to our U.K. operations.

Other

Debt

Short-term debt at June 30, 2013 consisted entirely of securities lending transactions.

During the six months ended June 30, 2013, we made principal payments of $30.0 million on our senior secured notes issued by Northwind Holdings, LLC.

In January 2013, we purchased and retired the outstanding principal of $62.5 million on our senior secured notes issued by Tailwind Holdings, LLC, resulting in a before-tax gain of $4.0 million.

Income Tax

At June 30, 2013, we had a liability of $23.6 million for unrecognized tax benefits, $15.0 million of which is associated with deferred tax assets. During the second quarter of 2013, we incurred a liability for unrecognized tax benefits of $4.0 million. The interest and penalties expense (benefit) related to unrecognized tax benefits in our consolidated statements of income was $0.1 million and $0.2 million for the three and six months ended June 30, 2013, respectively, and $(11.0) million and $(10.5) million for the three and six months ended June 30, 2012, respectively.

In July 2013, an income tax rate reduction was enacted which reduces the tax rate in the U.K. from the current rate of 23 percent to 21 percent effective April 2014 and 20 percent effective April 2015. We are required to adjust deferred tax assets and liabilities through income on the date of enactment of a rate change. We will record a reduction of approximately $4.0 million to $7.0 million in our income tax expense in the third quarter of 2013 to reflect the impact of the rate changes on our net deferred tax liability related to our U.K. operations.