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Guarantor and Non-Guarantor Financial Statements, Cash Flow Statements (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Cash flows from operating activities: |  |  |
Net cash provided by operating activities1 |  | $ 21.3 | $ 7.4
Cash flows from investing activities3: |  |  |
Capital expenditures |  | (25.9) | (11.3)
Proceeds from disposition of available for sale securities |  | 20.0 | 84.0
Net cash used in investing activities | [1] | (5.9) | 72.7
Cash flows from financing activities3: |  |  |
Repayments of Long-term Capital Lease Obligations |  | 0.0 | (0.1)
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  | 0.0 | 1.0
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  | (2.7) | (2.5)
Repurchase of common stock |  | (6.3) | (28.2)
Cash dividends paid to stockholders |  | (8.2) | (7.1)
Receipts of cash dividends from distribution of third party trust |  | 0.0 |
Intercompany loan |  | 0.0 | 0.0
Net cash used in financing activities | [1] | (17.2) | (36.9)
Net (decrease) increase in cash and cash equivalents during the period |  | (1.8) | 43.2
Cash and cash equivalents at beginning of period |  | 72.5 | 177.7
Cash and cash equivalents at end of period |  | 70.7 | 220.9
Parent |  |  |
Cash flows from operating activities: |  |  |
Net cash provided by operating activities1 |  | 17.2 | 37.8
Cash flows from investing activities3: |  |  |
Capital expenditures |  | 0.0 | 0.0
Proceeds from disposition of available for sale securities |  | 0.0 | 0.0
Net cash used in investing activities |  | 0.0 | 0.0
Cash flows from financing activities3: |  |  |
Repayments of Long-term Capital Lease Obligations |  |  | 0.0
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  |  | 0.0
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  | (2.7) | (2.5)
Repurchase of common stock |  | (6.3) | (28.2)
Cash dividends paid to stockholders |  | (8.2) | (7.1)
Receipts of cash dividends from distribution of third party trust |  | 0.0 |
Intercompany loan |  | 0.0 | 0.0
Net cash used in financing activities |  | (17.2) | (37.8)
Net (decrease) increase in cash and cash equivalents during the period |  | 0.0 | 0.0
Cash and cash equivalents at beginning of period |  | 0.0 | 0.0
Cash and cash equivalents at end of period |  | 0.0 | 0.0
Guarantor Subsidiaries |  |  |
Cash flows from operating activities: |  |  |
Net cash provided by operating activities1 |  | 201.4 | (32.7)
Cash flows from investing activities3: |  |  |
Capital expenditures |  | (25.3) | (6.7)
Proceeds from disposition of available for sale securities |  | 20.0 | 84.0
Net cash used in investing activities |  | (5.3) | 77.3
Cash flows from financing activities3: |  |  |
Repayments of Long-term Capital Lease Obligations |  |  | (0.1)
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  |  | 1.0
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  | 0.0 | 0.0
Repurchase of common stock |  | 0.0 | 0.0
Cash dividends paid to stockholders |  | 0.0 | 0.0
Receipts of cash dividends from distribution of third party trust |  | (200.0) |
Intercompany loan |  | 0.8 | (1.9)
Net cash used in financing activities |  | (199.2) | (1.0)
Net (decrease) increase in cash and cash equivalents during the period |  | (3.1) | 43.6
Cash and cash equivalents at beginning of period |  | 72.2 | 175.3
Cash and cash equivalents at end of period |  | 69.1 | 218.9
Non-Guarantor Subsidiaries |  |  |
Cash flows from operating activities: |  |  |
Net cash provided by operating activities1 |  | 2.7 | 2.3
Cash flows from investing activities3: |  |  |
Capital expenditures |  | (0.6) | (4.6)
Proceeds from disposition of available for sale securities |  | 0.0 | 0.0
Net cash used in investing activities |  | (0.6) | (4.6)
Cash flows from financing activities3: |  |  |
Repayments of Long-term Capital Lease Obligations |  |  | 0.0
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  |  | 0.0
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  | 0.0 | 0.0
Repurchase of common stock |  | 0.0 | 0.0
Cash dividends paid to stockholders |  | 0.0 | 0.0
Receipts of cash dividends from distribution of third party trust |  | 0.0 |
Intercompany loan |  | (0.8) | 1.9
Net cash used in financing activities |  | (0.8) | 1.9
Net (decrease) increase in cash and cash equivalents during the period |  | 1.3 | (0.4)
Cash and cash equivalents at beginning of period |  | 0.3 | 2.4
Cash and cash equivalents at end of period |  | 1.6 | 2.0
Consolidating Adjustments |  |  |
Cash flows from operating activities: |  |  |
Net cash provided by operating activities1 |  | (200.0) | 0.0
Cash flows from investing activities3: |  |  |
Capital expenditures |  | 0.0 | 0.0
Proceeds from disposition of available for sale securities |  | 0.0 | 0.0
Net cash used in investing activities |  | 0.0 | 0.0
Cash flows from financing activities3: |  |  |
Repayments of Long-term Capital Lease Obligations |  |  | 0.0
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  |  | 0.0
Cancellation of shares to cover employees' tax withholdings upon vesting of non-vested shares |  | 0.0 | 0.0
Repurchase of common stock |  | 0.0 | 0.0
Cash dividends paid to stockholders |  | 0.0 | 0.0
Receipts of cash dividends from distribution of third party trust |  | 200.0 |
Intercompany loan |  | 0.0 | 0.0
Net cash used in financing activities |  | 200.0 | 0.0
Net (decrease) increase in cash and cash equivalents during the period |  | 0.0 | 0.0
Cash and cash equivalents at beginning of period |  | 0.0 | 0.0
Cash and cash equivalents at end of period |  | $ 0.0 | $ 0.0
[1] | See Note 12 for the supplemental disclosure on non-cash transactions.

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