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Schedule I - Condensed Financial Information of the Registrant - Condensed Statements of Cash Flow (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Cash flows from operating activities |  |  |
Net cash provided by/(used in) operating activities | $ 783.1 | $ 581.6 | $ 1,045.3
Cash flows from investing activities |  |  |
Purchases of property and equipment | (22.9) | (31.9) | (37.7)
Proceeds from the sale of noncontrolling interest in a private company (Note 4) |  |  | 50.9
Proceeds from divestitures of businesses, net of cash divested (Note 4) |  | 887.2 |
Other investing activities | (3.7) | 17.5 | 3.7
Net cash (used in)/provided by investing activities | (140.8) | 525.5 | 192.0
Cash flows from financing activities |  |  |
Net proceeds from/(repayments of) commercial paper | 184.9 | (95.0) | 195.0
Net proceeds from issuance of borrowings |  |  | 891.7
Principal payments on borrowings | (300.0) | (300.0) | (1,150.0)
Proceeds from exercise of options | 0.2 | 9.5 | 11.6
Cash dividends and dividend equivalents paid | (349.0) | (364.2) | (381.6)
Common stock repurchased | (308.4) | (369.9) | (409.9)
Make-whole premium on early extinguishment of debt |  |  | (14.3)
Other financing activities | (1.7) | (1.3) | 0.2
Net cash used in financing activities | (896.8) | (1,177.3) | (1,269.5)
Net change in cash and cash equivalents, including settlement, and restricted cash | (254.5) | (70.2) | (32.2)
Supplemental cash flow information: |  |  |
Cash paid for lease liabilities | 40.1 | 40.5 | 46.5
Non-cash lease liabilities arising from obtaining right-of-use assets (Note 6) | 39.1 | 12.4 | 18.5
Parent Company | Reportable Legal Entities |  |  |
Cash flows from operating activities |  |  |
Net cash provided by/(used in) operating activities | 514.7 | (108.3) | 510.4
Cash flows from investing activities |  |  |
Purchases of property and equipment | (1.7) | (1.7) | (0.5)
Proceeds from the sale of noncontrolling interest in a private company (Note 4) |  |  | 50.9
Purchases of non-settlement investments |  | (400.0) |
Proceeds from the sale of non-settlement investments | 100.0 | 300.0 |
Proceeds from divestitures of businesses, net of cash divested (Note 4) |  | 887.2 |
Distributions received from/(capital contributed to) subsidiaries, net | (6.0) | 424.6 | 6.5
Other investing activities | (2.5) | 1.7 | 0.5
Net cash (used in)/provided by investing activities | 89.8 | 1,211.8 | 57.4
Cash flows from financing activities |  |  |
Advances from subsidiaries, net | 170.3 | 15.6 | 289.5
Net proceeds from/(repayments of) commercial paper | 184.9 | (95.0) | 195.0
Net proceeds from issuance of borrowings |  |  | 891.7
Principal payments on borrowings | (300.0) | (300.0) | (1,150.0)
Proceeds from exercise of options | 0.2 | 9.5 | 11.6
Cash dividends and dividend equivalents paid | (349.0) | (364.2) | (381.6)
Common stock repurchased | (308.4) | (369.9) | (409.9)
Make-whole premium on early extinguishment of debt |  |  | (14.3)
Other financing activities | (2.0) |  | 0.2
Net cash used in financing activities | (604.0) | (1,104.0) | (567.8)
Net change in cash and cash equivalents, including settlement, and restricted cash | 0.5 | (0.5) |
Cash and cash equivalents, including settlement, and restricted cash at beginning of period | 1.6 | 2.1 | 2.1
Cash and cash equivalents, including settlement, and restricted cash at end of period | 2.1 | 1.6 | 2.1
Supplemental cash flow information: |  |  |
Non-cash financing activity, distribution of note from subsidiary (Note 3) | 210.9 | 325.0 | 556.1
Cash paid for lease liabilities | 14.2 | $ 15.3 | 14.6
Non-cash lease liabilities arising from obtaining right-of-use assets (Note 6) | $ 16.5 |  | $ 0.9

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