Debt	3 Months Ended
Mar. 31, 2015
Debt [Abstract]
Debt	Note 9. Debt In December 2014, we entered into a Multicurrency Note Purchase and Private Shelf Agreement (the “MetLife Agreement”) with accredited institutional purchasers named therein pursuant to which we agreed to issue and sell $75 million of 3.25% Series A Senior Notes having a seven-year term (the “2022 Notes”) and $75 million of 3.72% Series B Senior Notes having a twelve-year term (the “2027 Notes”). In February 2015, we issued and sold the 2022 Notes and the 2027 Notes pursuant to the MetLife Agreement. We used the net proceeds from these issuance and sales for general corporate purposes, including repaying amounts outstanding under our revolving credit facility. Since December 2013, we have issued and sold through private placements senior notes that have an aggregate principal amount of $500 million pursuant to certain note purchase agreements (collectively, the “Senior Note Agreements”). The Senior Note Agreements contain affirmative, negative and financial covenants customary for agreements of this type. The negative covenants include restrictions on liens, indebtedness of our subsidiaries, priority indebtedness, fundamental changes, investments, transactions with affiliates, certain restrictive agreements and violations of laws and regulations. The financial covenant is a consolidated leverage ratio test that requires our ratio of debt to earnings before interest, taxes, depreciation, amortization and share-based compensation, as defined in the Senior Note Agreements, not to exceed 3.5-to-1. At March 31, 2015 we were in compliance with the covenants of the Senior Note Agreements. See Note 10 to the condensed consolidated financial statements in our 2014 Annual Report for additional information regarding our senior notes.

Debt

3 Months Ended

Mar. 31, 2015

Note 9. Debt

In December 2014, we entered into a Multicurrency Note Purchase and Private Shelf Agreement (the “MetLife Agreement”) with accredited institutional purchasers named therein pursuant to which we agreed to issue and sell $75 million of 3.25% Series A Senior Notes having a seven-year term (the “2022 Notes”) and $75 million of 3.72% Series B Senior Notes having a twelve-year term (the “2027 Notes”). In February 2015, we issued and sold the 2022 Notes and the 2027 Notes pursuant to the MetLife Agreement. We used the net proceeds from these issuance and sales for general corporate purposes, including repaying amounts outstanding under our revolving credit facility.

Since December 2013, we have issued and sold through private placements senior notes that have an aggregate principal amount of $500 million pursuant to certain note purchase agreements (collectively, the “Senior Note Agreements”). The Senior Note Agreements contain affirmative, negative and financial covenants customary for agreements of this type. The negative covenants include restrictions on liens, indebtedness of our subsidiaries, priority indebtedness, fundamental changes, investments, transactions with affiliates, certain restrictive agreements and violations of laws and regulations. The financial covenant is a consolidated leverage ratio test that requires our ratio of debt to earnings before interest, taxes, depreciation, amortization and share-based compensation, as defined in the Senior Note Agreements, not to exceed 3.5-to-1. At March 31, 2015 we were in compliance with the covenants of the Senior Note Agreements. See Note 10 to the condensed consolidated financial statements in our 2014 Annual Report for additional information regarding our senior notes.