Accumulated Other Comprehensive Income/(Loss) (Tables)

9 Months Ended

Sep. 30, 2018

Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]

Changes in Accumulated Other Comprehensive Income, Net of Tax

(In millions)	Foreign currency translation adjustment			Pension and other employee benefits			Unrealized holding loss on available-for-sale securities			Hedging activities			Accumulated other comprehensive (loss)/income
As of January 1, 2017	$	(1,505.4	)	$	(5.2	)	$	6.6		$	6.4		$	(1,497.6	)
Current period change:
Other comprehensive income before reclassifications	2,441.1			9.7			24.7			0.5			2,476.0
Amounts reclassified from AOCI	—			1.3			(4.4		)	(6.2		)	(9.3		)
Net current period other comprehensive income/(loss)	2,441.1			11.0			20.3			(5.7		)	2,466.7
As of September 30, 2017	$	935.7		$	5.8		$	26.9		$	0.7		$	969.1

Reclassifications from AOCI to net income during the three and nine months ended September 30, 2018 and  2017 were not material.

The changes in Accumulated other comprehensive income/(loss) (AOCI), net of their related tax effects, for the nine months ended September 30, 2018 and 2017 are as follows:

(In millions)	Foreign currency translation adjustment			Pension and other employee benefits			Unrealized holding gain/(loss) on available-for-sale debt securities			Accumulated other comprehensive income/(loss)
As of January 1, 2018	$	1,279.6		$	27.5		$	67.9		$	1,375.0
Current period change:
Other comprehensive loss before reclassifications	(679.2		)	—			—			(679.2		)
Amounts reclassified from AOCI	—			(1.5		)	(67.9		)	(69.4		)
Net current period other comprehensive loss	(679.2		)	(1.5		)	(67.9		)	(748.6		)
As of September 30, 2018	$	600.4		$	26.0		$	—		$	626.4