Comprehensive Income (Details 1) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2014
Changes in AOCI by component (net of tax) [Roll Forward]
Balance as of December 31, 2013	$ (61.1)
Other comprehensive income/(loss) before reclassifications	(21.4)
Amounts reclassified from AOCI	5.6
Net other comprehensive income/(loss)	(15.8)
Balance as of March 31, 2014	(76.9)
Gains / (Losses) on Cash Flow Hedges [Member]
Changes in AOCI by component (net of tax) [Roll Forward]
Balance as of December 31, 2013	(0.6)
Other comprehensive income/(loss) before reclassifications	(4.2)
Amounts reclassified from AOCI	3.1
Net other comprehensive income/(loss)	(1.1)
Balance as of March 31, 2014	(1.7)
Unrealized Gains / (Losses) on Available-for-Sale Securities [Member]
Changes in AOCI by component (net of tax) [Roll Forward]
Balance as of December 31, 2013	2.5
Other comprehensive income/(loss) before reclassifications	2.1
Amounts reclassified from AOCI	0
Net other comprehensive income/(loss)	2.1
Balance as of March 31, 2014	4.6
Defined Benefit Pension Plan Items [Member]
Changes in AOCI by component (net of tax) [Roll Forward]
Balance as of December 31, 2013	(106.0)
Other comprehensive income/(loss) before reclassifications	(1.7)
Amounts reclassified from AOCI	2.5
Net other comprehensive income/(loss)	0.8
Balance as of March 31, 2014	(105.2)
Foreign Currency Translation Adjustments [Member]
Changes in AOCI by component (net of tax) [Roll Forward]
Balance as of December 31, 2013	43.0
Other comprehensive income/(loss) before reclassifications	(17.6)
Amounts reclassified from AOCI	0
Net other comprehensive income/(loss)	(17.6)
Balance as of March 31, 2014	$ 25.4