Accumulated Other Comprehensive Income - Amounts in OCI (Details) (USD $) | 3 Months Ended | 9 Months Ended |
In Millions, unless otherwise specified | Sep. 30, 2014 | Sep. 30, 2013 | Sep. 30, 2014 | Sep. 30, 2013 |
Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease [Abstract] | ' | ' | ' | ' |
Pretax benefit plan adjustment amounts arising during the current period | ($3.60) | ($0.30) | ($7.90) | ($1.60) |
Income tax related to benefit plan adjustment amounts arising during the current period | 0.5 | 0 | 1.3 | 0.4 |
Pretax benefit plan adjustment amounts reclassified to net income | 12.5 | 19.3 | 35.5 | 57.3 |
Income tax related to benefit plan adjustment amounts reclassified to net income | -3.8 | -6.8 | -11.7 | -20.2 |
Total benefit plan adjustments, net of tax | 5.6 | 12.2 | 17.2 | 35.9 |
Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease [Abstract] | ' | ' | ' | ' |
Pretax foreign currency adjustment amounts arising during the current period | -50.3 | 8.2 | -46 | -23.8 |
Pretax foreign currency adjustment amounts reclassified to net income | -0.1 | ' | -0.3 | -0.1 |
Income tax of foreign currency adjustment amounts reclassified to net income | ' | ' | ' | 0.1 |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax | -50.4 | 8.2 | -46.3 | -23.8 |
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] | ' | ' | ' | ' |
Pretax unrealized gains (losses) on available-for-sale securities amounts arising during the current period | 0.1 | 0.3 | -0.1 | 0.5 |
Income tax related to unrealized gains (losses) on available-for-sale securities amounts arising during the current period | -0.1 | -0.1 | 0 | -0.2 |
Pretax unrealized gains (losses) on available-for-sale securities amounts reclassified to net income | -0.4 | 0 | -0.3 | -0.3 |
Income tax related to unrealized gains (losses) on available-for-sale securities amounts reclassified to net income | 0.1 | ' | 0.1 | 0.1 |
Total unrealized gains (losses) on available-for-sale securities, net of tax | -0.3 | 0.2 | ' | 0.1 |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract] | ' | ' | ' | ' |
Pretax gains (losses) on cash flow hedge amounts arising during the current period | 1.4 | -0.1 | -0.3 | 2.5 |
Pretax cash flow hedge amounts reclassified to net income | -1.5 | 0.4 | 0.2 | -1.4 |
Total gains (losses) on cash flow hedge, net of tax | -0.1 | 0.3 | -0.1 | 1.1 |
Total pretax other comprehensive income (loss) arising during the current period | -52.4 | 8.1 | -54.3 | -22.4 |
Total income tax related to other comprehensive income (loss) arising during the current period | 0.4 | -0.1 | 1.3 | 0.2 |
Total other comprehensive income (loss) reclassified to net income | 10.5 | 19.7 | 35.1 | 55.5 |
Total income tax related to other comprehensive income (loss) reclassified to net income | -3.7 | -6.8 | -11.6 | -20 |
Total other comprehensive income (loss) | -45.2 | 20.9 | -29.5 | 13.3 |
Parent [Member] | ' | ' | ' | ' |
Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease [Abstract] | ' | ' | ' | ' |
Pretax benefit plan adjustment amounts arising during the current period | -3.6 | -0.3 | -7.9 | -1.6 |
Income tax related to benefit plan adjustment amounts arising during the current period | 0.5 | 0 | 1.3 | 0.4 |
Pretax benefit plan adjustment amounts reclassified to net income | 12.4 | 19.2 | 35.2 | 57.1 |
Income tax related to benefit plan adjustment amounts reclassified to net income | -3.8 | -6.8 | -11.6 | -20.2 |
Total benefit plan adjustments, net of tax | 5.5 | 12.1 | 17 | 35.7 |
Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease [Abstract] | ' | ' | ' | ' |
Pretax foreign currency adjustment amounts arising during the current period | -48.1 | 7.6 | -44.1 | -22.5 |
Pretax foreign currency adjustment amounts reclassified to net income | -0.1 | ' | -0.3 | -0.1 |
Income tax of foreign currency adjustment amounts reclassified to net income | ' | ' | ' | 0.1 |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax | -48.2 | 7.6 | -44.4 | -22.5 |
Other Comprehensive Income (Loss), Available-for-sale Securities Adjustment, Net of Tax [Abstract] | ' | ' | ' | ' |
Pretax unrealized gains (losses) on available-for-sale securities amounts arising during the current period | 0.1 | 0.3 | -0.1 | 0.5 |
Income tax related to unrealized gains (losses) on available-for-sale securities amounts arising during the current period | -0.1 | -0.1 | 0 | -0.2 |
Pretax unrealized gains (losses) on available-for-sale securities amounts reclassified to net income | -0.4 | 0 | -0.3 | -0.3 |
Income tax related to unrealized gains (losses) on available-for-sale securities amounts reclassified to net income | 0.1 | ' | 0.1 | 0.1 |
Total unrealized gains (losses) on available-for-sale securities, net of tax | -0.3 | 0.2 | ' | 0.1 |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract] | ' | ' | ' | ' |
Pretax gains (losses) on cash flow hedge amounts arising during the current period | 1.4 | -0.1 | -0.3 | 2.5 |
Pretax cash flow hedge amounts reclassified to net income | -1.5 | 0.4 | 0.2 | -1.4 |
Total gains (losses) on cash flow hedge, net of tax | -0.1 | 0.3 | -0.1 | 1.1 |
Total pretax other comprehensive income (loss) arising during the current period | -50.2 | 7.5 | -52.4 | -21.1 |
Total income tax related to other comprehensive income (loss) arising during the current period | 0.4 | -0.1 | 1.3 | 0.2 |
Total other comprehensive income (loss) reclassified to net income | 10.4 | 19.6 | 34.8 | 55.3 |
Total income tax related to other comprehensive income (loss) reclassified to net income | -3.7 | -6.8 | -11.5 | -20 |
Total other comprehensive income (loss) | -43.1 | 20.2 | -27.8 | 14.4 |
Noncontrolling Interest [Member] | ' | ' | ' | ' |
Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease [Abstract] | ' | ' | ' | ' |
Pretax benefit plan adjustment amounts reclassified to net income | 0.1 | 0.1 | 0.3 | 0.2 |
Income tax related to benefit plan adjustment amounts reclassified to net income | 0 | ' | -0.1 | ' |
Total benefit plan adjustments, net of tax | 0.1 | 0.1 | 0.2 | 0.2 |
Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease [Abstract] | ' | ' | ' | ' |
Pretax foreign currency adjustment amounts arising during the current period | -2.2 | 0.6 | -1.9 | -1.3 |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax | -2.2 | 0.6 | -1.9 | -1.3 |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract] | ' | ' | ' | ' |
Total pretax other comprehensive income (loss) arising during the current period | -2.2 | 0.6 | -1.9 | -1.3 |
Total other comprehensive income (loss) reclassified to net income | 0.1 | 0.1 | 0.3 | 0.2 |
Total income tax related to other comprehensive income (loss) reclassified to net income | 0 | ' | -0.1 | ' |
Total other comprehensive income (loss) | ($2.10) | $0.70 | ($1.70) | ($1.10) |