Have some time on your hands? President Obama has released a new, detailed 1,500-page budget for fiscal year 2010 that fills in the broad outline he unveiled in February. 40 percent of the $3.4 trillion budget is discretionary spending, which Congress will appropriate. In a letter and press conference, President Obama vowed to cut the federal budget deficit in half by the end of his first term and said he would bring nondefense discretionary spending to its lowest level as a share of GDP since 1962 within 10 years. Also, under the budget request for the Pentagon, spending for Afghanistan surpasses spending for Iraq for the first time.