Changes in AOCI (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Beginning Balance	$ (47.3)	$ (149.9)	$ (54.6)	$ (82.1)
Change in Other Comprehensive Income	(87.4)	46.6	(85.9)	(25.2)
Amounts reclassified from AOCI	(1.1)	(3.1)	(6.9)	(7.1)
Net current period other comprehensive income/(loss)	8.9	0.1	5.8	3.6
Ending Balance	(133.6)	(100.2)	(133.6)	(100.2)
Gains Losses On Cash Flow and Net Investment Hedges [Member]
Beginning Balance	(2.2)	(1.9)	1.5	(2.9)
Change in Other Comprehensive Income	12.1	(1.5)	8.4	(1.0)
Amounts reclassified from AOCI	0	0	0	0.5
Net current period other comprehensive income/(loss)	12.1	(1.5)	8.4	(0.5)
Ending Balance	9.9	(3.4)	9.9	(3.4)
Pension And Other Retirement Benefits [Member]
Beginning Balance	(55.9)	(86.1)	(53.2)	(90.1)
Change in Other Comprehensive Income	0	0	(4.1)	0.5
Amounts reclassified from AOCI	1.1	1.8	2.5	5.3
Net current period other comprehensive income/(loss)	1.1	1.8	(1.6)	5.8
Ending Balance	(54.8)	(84.3)	(54.8)	(84.3)
Foreign Currency Translation Adjustments [Member]
Beginning Balance	10.8	(61.9)	(2.9)	10.9
Change in Other Comprehensive Income	(99.5)	48.1	(90.2)	(24.7)
Amounts reclassified from AOCI	0	1.3	4.4	1.3
Net current period other comprehensive income/(loss)	(99.5)	49.4	(85.8)	(23.4)
Ending Balance	$ (88.7)	$ (12.5)	$ (88.7)	$ (12.5)