CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net income	$ 176.7	$ 173.1
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	16.5	19.2
Amortization	41.7	45.6
Other non-cash items, net	20.8	28.4
Increase/(decrease) in cash resulting from changes in:
Other assets	(23.1)	(7.3)
Accounts payable and accrued liabilities	(109.3)	(44.1)
Income taxes payable	(2.8)	31.1
Other liabilities	(8.1)	(6.4)
Net cash provided by operating activities	112.4	239.6
Cash flows from investing activities
Payments for capitalized contract costs	(21.5)	(15.1)
Payments for internal use software	(7.9)	(6.4)
Purchases of property and equipment	(6.3)	(16.1)
Proceeds from the sale of former corporate headquarters (Note 4)	44.2
Purchases of non-settlement related investments and other		(4.1)
Proceeds from maturity of non-settlement related investments and other	0.3	19.8
Purchases of held-to-maturity non-settlement related investments		(0.7)
Proceeds from held-to-maturity non-settlement related investments		5.9
Net cash provided by/(used in) investing activities	8.8	(16.7)
Cash flows from financing activities
Cash dividends paid	(92.4)	(87.4)
Common stock repurchased (Note 11)	(237.1)	(171.6)
Net repayments of commercial paper	(160.0)	(65.0)
Proceeds from exercise of options	1.0	1.8
Other financing activities	(0.7)	(0.1)
Net cash used in financing activities	(489.2)	(322.3)
Net change in cash, cash equivalents, and restricted cash	(368.0)	(99.4)
Cash, cash equivalents, and restricted cash at beginning of period	1,456.8	979.7
Cash, cash equivalents, and restricted cash at end of period	1,088.8	880.3
Supplemental cash flow information:
Interest paid	18.2	24.0
Income taxes paid	23.1	10.3
Cash paid for lease liabilities	12.8	12.0
Non-cash lease liabilities arising from obtaining right-of-use assets	2.7	269.1
Restricted cash at end of year (included in Other assets)	$ 16.0	$ 6.2