Debt	6 Months Ended
Jun. 30, 2016
Debt disclosure
Debt disclosure [Text Block]	7. DEBT Debt Issuance. On May 11, 2016, the Company issued $500 million aggregate principal amount of 3.75% senior notes that will mature on May 15, 2046. The net proceeds of the issuance, after the deduction of underwriting and other expenses, totaled approximately $491 million. Interest on the senior notes is payable semi-annually in arrears on May 15 and November 15, commencing on November 15, 2016. Prior to November 15, 2045, the senior notes may be redeemed, in whole or in part, at the Company’s option, at any time or from time to time, at a redemption price equal to the greater of (a) 100% of the principal amount of any senior notes to be redeemed or (b) the sum of the present values of the remaining scheduled payments of principal and interest on any senior notes to be redeemed (exclusive of interest accrued to the date of redemption) discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the then current Treasury rate (as defined in the senior notes), plus 20 basis points. On or after November 15, 2045, the senior notes may be redeemed, in whole or in part, at the Company’s option, at any time or from time to time, at a redemption price equal to 100% of the principal amount of any senior notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date. Debt Payment. On June 20, 2016, the Company’s $400 million, 6.25% senior notes matured and were fully paid.

Debt

6 Months Ended

Jun. 30, 2016

7. DEBT

Debt Issuance. On May 11, 2016, the Company issued $500 million aggregate principal amount of 3.75% senior notes that will mature on May 15, 2046. The net proceeds of the issuance, after the deduction of underwriting and other expenses, totaled approximately $491 million. Interest on the senior notes is payable semi-annually in arrears on May 15 and November 15, commencing on November 15, 2016. Prior to November 15, 2045, the senior notes may be redeemed, in whole or in part, at the Company’s option, at any time or from time to time, at a redemption price equal to the greater of (a) 100% of the principal amount of any senior notes to be redeemed or (b) the sum of the present values of the remaining scheduled payments of principal and interest on any senior notes to be redeemed (exclusive of interest accrued to the date of redemption) discounted to the date of redemption on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) at the then current Treasury rate (as defined in the senior notes), plus 20 basis points. On or after November 15, 2045, the senior notes may be redeemed, in whole or in part, at the Company’s option, at any time or from time to time, at a redemption price equal to 100% of the principal amount of any senior notes to be redeemed, plus accrued and unpaid interest to, but excluding, the redemption date.

Debt Payment. On June 20, 2016, the Company’s $400 million, 6.25% senior notes matured and were fully paid.