Accumulated Other Comprehensive Income - Amounts in OCI (Details) (USD $) | 3 Months Ended | 6 Months Ended |
In Millions, unless otherwise specified | Jun. 30, 2014 | Jun. 30, 2013 | Jun. 30, 2014 | Jun. 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 | ($2.60) | ($0.80) | ($4.30) | ($1.30) |
Income tax related to benefit plan adjustment amounts arising during the current period | 0.5 | 0.3 | 0.8 | 0.4 |
Pretax benefit plan adjustment amounts reclassified to net income | 11.2 | 18.7 | 23 | 38 |
Income tax related to benefit plan adjustment amounts reclassified to net income | -3.9 | -6.7 | -7.9 | -13.4 |
Total benefit plan adjustments, net of tax | 5.2 | 11.5 | 11.6 | 23.7 |
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 | 8.5 | -25.4 | 4.3 | -32 |
Pretax foreign currency adjustment amounts reclassified to net income | -0.2 | ' | -0.2 | -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 | 8.3 | -25.4 | 4.1 | -32 |
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 | ' | -0.2 | 0.2 |
Income tax related to unrealized gains (losses) on available-for-sale securities amounts arising during the current period | 0.1 | ' | 0.1 | -0.1 |
Pretax unrealized gains (losses) on available-for-sale securities amounts reclassified to net income | ' | -0.1 | 0.1 | -0.3 |
Income tax related to unrealized gains (losses) on available-for-sale securities amounts reclassified to net income | ' | ' | ' | 0.1 |
Total unrealized gains (losses) on available-for-sale securities, net of tax | ' | -0.1 | ' | -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 | 2.8 | -1.7 | 2.6 |
Pretax cash flow hedge amounts reclassified to net income | 0.8 | -1.6 | 1.7 | -1.8 |
Total gains (losses) on cash flow hedge, net of tax | -0.6 | 1.2 | ' | 0.8 |
Total pretax other comprehensive income (loss) arising during the current period | 4.4 | -23.4 | -1.9 | -30.5 |
Total income tax related to other comprehensive income (loss) arising during the current period | 0.6 | 0.3 | 0.9 | 0.3 |
Total other comprehensive income (loss) reclassified to net income | 11.8 | 17 | 24.6 | 35.8 |
Total income tax related to other comprehensive income (loss) reclassified to net income | -3.9 | -6.7 | -7.9 | -13.2 |
Total other comprehensive income (loss) | 12.9 | -12.8 | 15.7 | -7.6 |
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 | -2.6 | -0.8 | -4.3 | -1.3 |
Income tax related to benefit plan adjustment amounts arising during the current period | 0.5 | 0.3 | 0.8 | 0.4 |
Pretax benefit plan adjustment amounts reclassified to net income | 11.1 | 18.7 | 22.8 | 37.9 |
Income tax related to benefit plan adjustment amounts reclassified to net income | -3.8 | -6.7 | -7.8 | -13.4 |
Total benefit plan adjustments, net of tax | 5.2 | 11.5 | 11.5 | 23.6 |
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 | 7.4 | -24.2 | 4 | -30.1 |
Pretax foreign currency adjustment amounts reclassified to net income | -0.2 | ' | -0.2 | -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 | 7.2 | -24.2 | 3.8 | -30.1 |
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 | ' | -0.2 | 0.2 |
Income tax related to unrealized gains (losses) on available-for-sale securities amounts arising during the current period | 0.1 | ' | 0.1 | -0.1 |
Pretax unrealized gains (losses) on available-for-sale securities amounts reclassified to net income | 0 | -0.1 | 0.1 | -0.3 |
Income tax related to unrealized gains (losses) on available-for-sale securities amounts reclassified to net income | ' | ' | ' | 0.1 |
Total unrealized gains (losses) on available-for-sale securities, net of tax | ' | -0.1 | ' | -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 | 2.8 | -1.7 | 2.6 |
Pretax cash flow hedge amounts reclassified to net income | 0.8 | -1.6 | 1.7 | -1.8 |
Total gains (losses) on cash flow hedge, net of tax | -0.6 | 1.2 | ' | 0.8 |
Total pretax other comprehensive income (loss) arising during the current period | 3.3 | -22.2 | -2.2 | -28.6 |
Total income tax related to other comprehensive income (loss) arising during the current period | 0.6 | 0.3 | 0.9 | 0.3 |
Total other comprehensive income (loss) reclassified to net income | 11.7 | 17 | 24.4 | 35.7 |
Total income tax related to other comprehensive income (loss) reclassified to net income | -3.8 | -6.7 | -7.8 | -13.2 |
Total other comprehensive income (loss) | 11.8 | -11.6 | 15.3 | -5.8 |
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 | ' | 0.2 | 0.1 |
Income tax related to benefit plan adjustment amounts reclassified to net income | -0.1 | ' | -0.1 | ' |
Total benefit plan adjustments, net of tax | ' | ' | 0.1 | 0.1 |
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 | 1.1 | -1.2 | 0.3 | -1.9 |
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax | 1.1 | -1.2 | 0.3 | -1.9 |
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax [Abstract] | ' | ' | ' | ' |
Total pretax other comprehensive income (loss) arising during the current period | 1.1 | -1.2 | 0.3 | -1.9 |
Total other comprehensive income (loss) reclassified to net income | 0.1 | ' | 0.2 | 0.1 |
Total income tax related to other comprehensive income (loss) reclassified to net income | -0.1 | ' | -0.1 | ' |
Total other comprehensive income (loss) | $1.10 | ($1.20) | $0.40 | ($1.80) |