CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities
Net income	$ 338.6	$ 787.9
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	32.0	38.2
Amortization	83.3	91.4
Gain on divestitures of businesses, excluding transaction costs (Note 4)		(532.1)
Other non-cash items, net	63.9	52.3
Increase/(decrease) in cash, excluding the effects of divestitures, resulting from changes in:
Other assets	(16.6)	12.3
Accounts payable and accrued liabilities	(130.9)	(59.3)
Income taxes payable	(19.2)	21.5
Other liabilities	(3.3)	(9.6)
Net cash provided by operating activities	347.8	402.6
Cash flows from investing activities
Payments for capitalized contract costs	(46.0)	(24.5)
Payments for internal use software	(22.3)	(19.1)
Purchases of property and equipment	(15.9)	(31.4)
Proceeds from the sale of former corporate headquarters (Note 4)	44.2
Proceeds from divestitures of businesses, net of cash divested (Note 4)		732.6
Purchases of non-settlement related investments	(2.2)	(4.5)
Proceeds from maturity of non-settlement related investments	0.6	19.8
Purchases of held-to-maturity non-settlement related investments		(1.3)
Proceeds from held-to-maturity non-settlement related investments		15.4
Other investing activities	(2.6)
Net cash (used in)/provided by investing activities	(44.2)	687.0
Cash flows from financing activities
Cash dividends paid	(184.9)	(172.9)
Common stock repurchased (Note 11)	(237.7)	(341.6)
Net (repayments of)/proceeds from commercial paper	(145.0)	143.0
Principal payments on borrowings		(500.0)
Proceeds from exercise of options	1.5	20.5
Other financing activities	(0.7)	(0.8)
Net cash used in financing activities	(566.8)	(851.8)
Net change in cash, cash equivalents, and restricted cash	(263.2)	237.8
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	1,193.6	1,217.5
Supplemental cash flow information:
Interest paid	53.5	78.1
Income taxes paid	59.7	156.6
Cash paid for lease liabilities	25.6	24.3
Non-cash lease liabilities arising from obtaining right-of-use assets	17.8	269.1
Restricted cash at end of year (included in Other assets)	$ 12.0	$ 7.3