Comprehensive Income (Details 1) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 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	6.1
Amounts reclassified from AOCI	4.1
Net other comprehensive income/(loss)	10.2
Balance as of March 31, 2014	(50.9)
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	(2.5)
Amounts reclassified from AOCI	2.5
Net other comprehensive income/(loss)	0
Balance as of March 31, 2014	(0.6)
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	1.1
Amounts reclassified from AOCI	0
Net other comprehensive income/(loss)	1.1
Balance as of March 31, 2014	3.6
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	(1.4)
Amounts reclassified from AOCI	1.6
Net other comprehensive income/(loss)	0.2
Balance as of March 31, 2014	(105.8)
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	8.9
Amounts reclassified from AOCI	0
Net other comprehensive income/(loss)	8.9
Balance as of March 31, 2014	$ 51.9