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Quarterly report pursuant to Section 13 or 15(d)

Shareholders' Equity (Changes In The Components Of Accumulated Other Comprehensive Income (Loss)) (Detail)

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Shareholders' Equity (Changes In The Components Of Accumulated Other Comprehensive Income (Loss)) (Detail) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Accumulated Other Comprehensive Income (Loss) Balance Ìý Ìý $ (92.6) Ìý
Other Comprehensive Income (Loss), Net of Tax (17.5) 26.4 5.7 51.0
Accumulated Other Comprehensive Income (Loss), Balance (89.9) Ìý (89.9) Ìý
Postretirement Benefit Liability [Member]
 Ìý Ìý Ìý Ìý
Accumulated Other Comprehensive Income (Loss) Balance Ìý Ìý (408.9) (305.1)
Other Comprehensive Income (Loss), Net of Tax Ìý Ìý 10.3 8.6
Accumulated Other Comprehensive Income (Loss), Balance (398.6) (296.5) (398.6) (296.5)
Accumulated Net Unrealized Investment Gain (Loss) On Securities [Member]
 Ìý Ìý Ìý Ìý
Accumulated Other Comprehensive Income (Loss) Balance Ìý Ìý 2.6 33.6
Other Comprehensive Income (Loss), Net of Tax Ìý Ìý (0.5) (19.2)
Accumulated Other Comprehensive Income (Loss), Balance 2.1 14.4 2.1 14.4
Foreign Currency Translation Adjustment [Member]
 Ìý Ìý Ìý Ìý
Accumulated Other Comprehensive Income (Loss) Balance Ìý Ìý 312.5 314.7
Other Comprehensive Income (Loss), Net of Tax Ìý Ìý (6.5) 57.5
Accumulated Other Comprehensive Income (Loss), Balance 306.0 372.2 306.0 372.2
Unrealized Gain (Loss) On Derivatives [Member]
 Ìý Ìý Ìý Ìý
Accumulated Other Comprehensive Income (Loss) Balance Ìý Ìý 1.2 2.7
Other Comprehensive Income (Loss), Net of Tax Ìý Ìý (0.6) 3.2
Accumulated Other Comprehensive Income (Loss), Balance 0.6 5.9 0.6 5.9
Accumulated Other Comprehensive Income (Loss) [Member]
 Ìý Ìý Ìý Ìý
Accumulated Other Comprehensive Income (Loss) Balance Ìý Ìý (92.6) 45.9
Other Comprehensive Income (Loss), Net of Tax Ìý Ìý 2.7 50.1
Accumulated Other Comprehensive Income (Loss), Balance $ (89.9) $ 96.0 $ (89.9) $ 96.0