Reconciliation of Operating Income (Loss) to Income from Continuing Operations Before Income Tax (Detail) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | ||
---|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
|
Segment Reporting [Abstract] | ||||
Operating income from segments | $ 63.5 | $ 51.4 | $ 115.4 | $ 87.9 |
Non-operating income and expense | (27.5) | (46.7) | (52.8) | (90.6) |
Income (loss) before income taxes | $ 36.0 | $ 4.7 | $ 62.6 | $ (2.7) |