What was the difference in the total balance between Money market mutual funds and commercial paper?
{"Cash and cash equivalents: -- Money market mutual funds": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": 121.0, "Significant Other Observable Inputs (Level 2)": "$\u2014", "Total Balance": 121.0}, "Cash and cash equivalents: -- Deposit accounts": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": "\u2014", "Significant Other Observable Inputs (Level 2)": 641.6, "Total Balance": 641.6}, "Cash and cash equivalents: -- Commercial Paper": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": "\u2014", "Significant Other Observable Inputs (Level 2)": 118.7, "Total Balance": 118.7}, "Cash and cash equivalents: -- Government agency bonds": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": "\u2014", "Significant Other Observable Inputs (Level 2)": 20.0, "Total Balance": 20.0}, "Short-term investments: -- Marketable equity securities": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": 2.8, "Significant Other Observable Inputs (Level 2)": "\u2014", "Total Balance": 2.8}, "Short-term investments: -- Corporate bonds and debt": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": "\u2014", "Significant Other Observable Inputs (Level 2)": 542.9, "Total Balance": 542.9}, "Short-term investments: -- Time deposits": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": "\u2014", "Significant Other Observable Inputs (Level 2)": 11.5, "Total Balance": 11.5}, "Short-term investments: -- Government agency bonds": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": "\u2014", "Significant Other Observable Inputs (Level 2)": 723.2, "Total Balance": 723.2}, "Short-term investments: -- Municipal bonds - taxable": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": "\u2014", "Significant Other Observable Inputs (Level 2)": 14.9, "Total Balance": 14.9}, "Short-term investments: -- Total assets measured at fair value": {"Quoted Prices in Active Markets for Identical Instruments (Level 1)": 123.8, "Significant Other Observable Inputs (Level 2)": 2072.8, "Total Balance": 2196.6}}
total_mmf = df["Cash and cash equivalents: -- Money market mutual funds"]["Quoted Prices in Active Markets for Identical Instruments (Level 1)"]
total_cp = df["Cash and cash equivalents: -- Commercial Paper"]["Significant Other Observable Inputs (Level 2)"]
answer = total_mmf - total_cp