Coupon is fixed at 6.375% until 4/15/2023 after which it will float at a rate of 3 month Libor plus a spread of 3.593 until 4/15/2028. After 4/15/2028 until 4/15/2043 the coupon will be 3 month Libor plus a spread of 3.843%. From 4/15/2043 until 4/15/2078 the coupon will be 3 month Libor plus a spread of 4.593%.