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Guarantor and Non-Guarantor Financial Statements, Cash Flow Statements (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Cash flows from operating activities: |  |  |  |
Net cash provided by (used in) operating activities |  |  | $ 108.9 | $ 103.7
Cash flows from investing activities: |  |  |  |
Capital expenditures | $ (15.5) | $ (9.5) | (38.4) | (39.6)
Purchase of available for sale securities |  |  | (0.5) | (53.4)
Proceeds from disposition of available for sale securities |  |  | 84.0 | 82.2
Change in restricted cash |  |  | 0.0 | (0.7)
Net cash provided by (used in) investing activities |  |  | 45.1 | (11.5)
Cash flows from financing activities: |  |  |  |
Repurchase of Senior Notes2 |  |  | (6.1) | 0.0
Settlement of Convertible Notes2 |  |  | (175.0) | 0.0
Proceeds from cash-settled call options related to settlement of Convertible Notes2 |  |  | 94.9 | 0.0
Payment for conversion premium related to settlement of Convertible Notes2 |  |  | (94.9) | 0.0
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  |  | 1.1 | 0.8
Cancellation of shares to cover employees’ tax withholdings upon vesting of non-vested shares |  |  | (3.0) | (2.4)
Repurchase of common stock |  |  | (45.1) | (28.7)
Cash dividend paid to stockholders |  |  | (21.0) | (19.1)
Intercompany loan |  |  | 0.0 | 0.0
Net cash used in financing activities |  |  | (249.1) | (49.4)
Net (decrease) increase in cash and cash equivalents during the period |  |  | (95.1) | 42.8
Cash and cash equivalents at beginning of period |  |  | 177.7 | 169.5
Cash and cash equivalents at end of period | 82.6 | 212.3 | 82.6 | 212.3
Parent |  |  |  |
Cash flows from operating activities: |  |  |  |
Net cash provided by (used in) operating activities |  |  | 250.2 | 13.9
Cash flows from investing activities: |  |  |  |
Capital expenditures |  |  | 0.0 | 0.0
Purchase of available for sale securities |  |  | 0.0 | 0.0
Proceeds from disposition of available for sale securities |  |  | 0.0 | 0.0
Change in restricted cash |  |  |  | 0.0
Net cash provided by (used in) investing activities |  |  | 0.0 | 0.0
Cash flows from financing activities: |  |  |  |
Repurchase of Senior Notes2 |  |  | (6.1) |
Settlement of Convertible Notes2 |  |  | (175.0) |
Proceeds from cash-settled call options related to settlement of Convertible Notes2 |  |  | 94.9 |
Payment for conversion premium related to settlement of Convertible Notes2 |  |  | (94.9) |
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  |  | 0.0 | 0.0
Cancellation of shares to cover employees’ tax withholdings upon vesting of non-vested shares |  |  | (3.0) | (2.4)
Repurchase of common stock |  |  | (45.1) | (28.7)
Cash dividend paid to stockholders |  |  | (21.0) | (19.1)
Intercompany loan |  |  | 0.0 | 31.3
Net cash used in financing activities |  |  | (250.2) | (18.9)
Net (decrease) increase in cash and cash equivalents during the period |  |  | 0.0 | (5.0)
Cash and cash equivalents at beginning of period |  |  | 0.0 | 5.0
Cash and cash equivalents at end of period | 0.0 | 0.0 | 0.0 | 0.0
Guarantor Subsidiaries |  |  |  |
Cash flows from operating activities: |  |  |  |
Net cash provided by (used in) operating activities |  |  | (140.8) | 82.7
Cash flows from investing activities: |  |  |  |
Capital expenditures |  |  | (26.0) | (38.1)
Purchase of available for sale securities |  |  | (0.5) | (53.4)
Proceeds from disposition of available for sale securities |  |  | 84.0 | 82.2
Change in restricted cash |  |  |  | (0.7)
Net cash provided by (used in) investing activities |  |  | 57.5 | (10.0)
Cash flows from financing activities: |  |  |  |
Repurchase of Senior Notes2 |  |  | 0.0 |
Settlement of Convertible Notes2 |  |  | 0.0 |
Proceeds from cash-settled call options related to settlement of Convertible Notes2 |  |  | 0.0 |
Payment for conversion premium related to settlement of Convertible Notes2 |  |  | 0.0 |
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  |  | 1.1 | 0.8
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 dividend paid to stockholders |  |  | 0.0 | 0.0
Intercompany loan |  |  | (13.5) | (22.6)
Net cash used in financing activities |  |  | (12.4) | (21.8)
Net (decrease) increase in cash and cash equivalents during the period |  |  | (95.7) | 50.9
Cash and cash equivalents at beginning of period |  |  | 175.3 | 157.7
Cash and cash equivalents at end of period | 79.6 | 208.6 | 79.6 | 208.6
Non-Guarantor Subsidiaries |  |  |  |
Cash flows from operating activities: |  |  |  |
Net cash provided by (used in) operating activities |  |  | (0.5) | 7.1
Cash flows from investing activities: |  |  |  |
Capital expenditures |  |  | (12.4) | (1.5)
Purchase of available for sale securities |  |  | 0.0 | 0.0
Proceeds from disposition of available for sale securities |  |  | 0.0 | 0.0
Change in restricted cash |  |  |  | 0.0
Net cash provided by (used in) investing activities |  |  | (12.4) | (1.5)
Cash flows from financing activities: |  |  |  |
Repurchase of Senior Notes2 |  |  | 0.0 |
Settlement of Convertible Notes2 |  |  | 0.0 |
Proceeds from cash-settled call options related to settlement of Convertible Notes2 |  |  | 0.0 |
Payment for conversion premium related to settlement of Convertible Notes2 |  |  | 0.0 |
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  |  | 0.0 | 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 dividend paid to stockholders |  |  | 0.0 | 0.0
Intercompany loan |  |  | 13.5 | (8.7)
Net cash used in financing activities |  |  | 13.5 | (8.7)
Net (decrease) increase in cash and cash equivalents during the period |  |  | 0.6 | (3.1)
Cash and cash equivalents at beginning of period |  |  | 2.4 | 6.8
Cash and cash equivalents at end of period | 3.0 | 3.7 | 3.0 | 3.7
Consolidating Adjustments |  |  |  |
Cash flows from operating activities: |  |  |  |
Net cash provided by (used in) operating activities |  |  | 0.0 | 0.0
Cash flows from investing activities: |  |  |  |
Capital expenditures |  |  | 0.0 | 0.0
Purchase of available for sale securities |  |  | 0.0 | 0.0
Proceeds from disposition of available for sale securities |  |  | 0.0 | 0.0
Change in restricted cash |  |  |  | 0.0
Net cash provided by (used in) investing activities |  |  | 0.0 | 0.0
Cash flows from financing activities: |  |  |  |
Repurchase of Senior Notes2 |  |  | 0.0 |
Settlement of Convertible Notes2 |  |  | 0.0 |
Proceeds from cash-settled call options related to settlement of Convertible Notes2 |  |  | 0.0 |
Payment for conversion premium related to settlement of Convertible Notes2 |  |  | 0.0 |
Excess tax benefit upon vesting of non-vested shares and dividend payment on unvested shares expected to vest |  |  | 0.0 | 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 dividend paid to stockholders |  |  | 0.0 | 0.0
Intercompany loan |  |  | 0.0 | 0.0
Net cash used in financing activities |  |  | 0.0 | 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 | $ 0.0 | $ 0.0

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