Debt	3 Months Ended
Mar. 31, 2017
Debt Disclosure [Abstract]
Debt Disclosure [Text Block]	On February 16, 2017, we issued $900 of fixed rate senior notes consisting of $300 due March 1, 2022 that bear an annual interest rate of 2.125%, $300 due March 1, 2027 that bear an annual interest rate of 2.8%, and $300 due March 1, 2047 that bear an annual interest rate of 3.65%. The notes are unsecured senior obligations and rank equally in right of payment with our existing and future unsecured and unsubordinated indebtedness. The net proceeds of the issuance totaled $872, after deducting underwriting discounts, commissions and offering expenses.

Debt

3 Months Ended

Mar. 31, 2017

On February 16, 2017, we issued $900 of fixed rate senior notes consisting of $300 due March 1, 2022 that bear an annual interest rate of 2.125%, $300 due March 1, 2027 that bear an annual interest rate of 2.8%, and $300 due March 1, 2047 that bear an annual interest rate of 3.65%. The notes are unsecured senior obligations and rank equally in right of payment with our existing and future unsecured and unsubordinated indebtedness. The net proceeds of the issuance totaled $872, after deducting underwriting discounts, commissions and offering expenses.