CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities
Consolidated net loss from continuing operations	$ (449.8)	$ (317.2)	$ (88.3)
Income from discontinued operations, net of tax	0.0	1,068.4	75.0
Adjustments to reconcile consolidated net income (loss) to net cash provided by (used for) operating activities:
Gain on sale of U.S. Federal business	0.0	(1,060.0)	0.0
Foreign currency losses	2.6	36.2	11.0
Non-cash interest expense	1.8	4.6	9.2
Debt extinguishment charge	0.0	28.5	20.1
Employee stock compensation	18.8	14.5	13.2
Depreciation and amortization of properties	30.5	29.7	35.3
Depreciation and amortization of outsourcing assets	68.0	65.8	63.8
Amortization of marketable software	71.9	65.5	48.3
Amortization of intangible assets	3.0	0.0	0.0
Other non-cash operating activities	(0.6)	(0.3)	(1.6)
Loss on disposal of capital assets	2.2	4.5	1.5
Postretirement contributions	(56.4)	(832.2)	(109.4)
Postretirement expense	552.0	239.2	96.6
Deferred income taxes, net	(59.2)	(13.4)	4.4
Changes in operating assets and liabilities, excluding the effect of acquisitions:
Receivables, net and contract assets	47.4	(74.8)	(8.3)
Inventories	6.0	3.0	6.1
Other assets	8.0	5.9	9.9
Accounts payable and current liabilities	(149.4)	3.4	(114.4)
Other liabilities	35.7	47.5	51.5
Net cash provided by (used for) operating activities	132.5	(681.2)	123.9
Cash flows from investing activities
Purchases of businesses, net of cash acquired	(239.3)	0.0	0.0
Net proceeds from sale of U.S. Federal business	0.0	1,162.9	0.0
Proceeds from investments	4,148.2	3,388.5	3,568.9
Purchases of investments	(4,168.1)	(3,379.2)	(3,566.1)
Capital additions of properties	(27.3)	(27.7)	(38.0)
Capital additions of outsourcing assets	(18.5)	(30.1)	(48.8)
Investment in marketable software	(54.4)	(72.3)	(73.0)
Net proceeds from sale of properties	0.0	0.0	(0.3)
Other	(0.9)	(0.5)	(0.9)
Net cash (used for) provided by investing activities	(360.3)	1,041.6	(158.2)
Cash flows from financing activities
Proceeds from issuance of long-term debt	1.5	497.3	30.5
Payments of long-term debt	(103.1)	(454.8)	(14.4)
Cash paid for debt extinguishment	0.0	(23.7)	(56.7)
Issuance costs relating to long-term debt	0.0	(7.9)	0.0
Proceeds from exercise of stock options	4.5	0.0	0.0
Proceeds from capped call transactions	0.0	0.0	7.2
Other	(8.4)	(5.8)	(4.6)
Net cash (used for) provided by financing activities	(105.5)	5.1	(38.0)
Effect of exchange rate changes on cash, cash equivalents and restricted cash	(12.8)	(10.6)	0.0
(Decrease) increase in cash, cash equivalents and restricted cash	(346.1)	354.9	(72.3)
Cash, cash equivalents and restricted cash, beginning of year	906.7	551.8	624.1
Cash, cash equivalents and restricted cash, end of year	$ 560.6	$ 906.7	$ 551.8