Comprehensive Income (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Changes in AOCI by component (net of tax) [Roll Forward]
Balance as of December 31, 2012	$ (22.3)
Other comprehensive income/(loss) before reclassifications	(6.5)
Amounts reclassified from AOCI	(32.3)
Net other comprehensive (loss) income	(38.8)
Balance as of December 31, 2013	(61.1)
Gains / (Losses) on Cash Flow Hedges [Member]
Changes in AOCI by component (net of tax) [Roll Forward]
Balance as of December 31, 2012	1.1
Other comprehensive income/(loss) before reclassifications	(4.4)
Amounts reclassified from AOCI	2.7
Net other comprehensive (loss) income	(1.7)
Balance as of December 31, 2013	(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, 2012	9.3
Other comprehensive income/(loss) before reclassifications	(6.8)
Amounts reclassified from AOCI	0
Net other comprehensive (loss) income	(6.8)
Balance as of December 31, 2013	2.5
Pension Benefits [Member]
Changes in AOCI by component (net of tax) [Roll Forward]
Balance as of December 31, 2012	(147.5)
Other comprehensive income/(loss) before reclassifications	35.4
Amounts reclassified from AOCI	6.1
Net other comprehensive (loss) income	41.5
Balance as of December 31, 2013	(106.0)
Foreign Currency Translation Adjustments [Member]
Changes in AOCI by component (net of tax) [Roll Forward]
Balance as of December 31, 2012	114.8
Other comprehensive income/(loss) before reclassifications	(30.7)
Amounts reclassified from AOCI	(41.1)
Net other comprehensive (loss) income	(71.8)
Balance as of December 31, 2013	$ 43.0