Coach? Business Class? Delta no longer has fixed award levels to/from US/Canada (they only still exist for partner metal flights that neither begin, nor end, in US/Canada). 112K miles will get you to most places in the world in coach roundtrip, and domestic FC on a number of US48 routes. But is not enough for international business class/Delta One for most destinations. Generally speaking, you can get about 1.1 - 1.2 CPM of value from awards (about $1200 for 112K miles) without Amex 15% mileage discount, and somewhat better with Amex discount.