Cash and Cash Equivalents (Tables)

12 Months Ended

Dec. 31, 2019

Cash and Cash Equivalents [Abstract]

Cash and Short-Term Investments

Short-term investments consist of the following cash equivalents:

As of December 31 (in millions)	2019		2018
Interest-bearing deposits at the FRB-NY	$	219.4	$	234.0
Money market mutual funds	5.7		26.3
Other (1)	91.7		6.0
Total short-term investments	$	316.8	$	266.3

(1)Includes cash collateral posted for certain derivative positions at both December 31, 2019 and 2018.