Consolidated Statements of Changes in Equity (USD $) In Millions, unless otherwise specified	Total	Common Shares [Member]	Additional Paid-In-Capital [Member]	Treasury Shares [Member]	Retained Earnings [Member]	Retained Earnings Appropriated for Investors in CIP [Member]	Accumulated Other Comprehensive Income [Member]	Total Equity Attributable to Common Shareholders [Member]	Nonredeemable Noncontrolling Interests in Consolidated Entities [Member]
Beginning balance at Dec. 31, 2011	$ 9,137.6	$ 98.1	$ 6,180.6	$ (1,280.4)	$ 2,413.2	$ 334.3	$ 373.3	$ 8,119.1	$ 1,018.5
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	587.3				677.1			677.1	(89.8)
Other comprehensive income (loss)	156.3						157.2	157.2	(0.9)
Total comprehensive income (loss)	743.6
Net income (loss) reclassified to appropriated retained earnings	0					(82.3)		(82.3)	82.3
Currency translation differences on investments in foreign subsidiaries reclassified to appropriated retained earnings	0					(6.3)		(6.3)	6.3
Deconsolidation of CIP	(116.9)	0	0	0	0	(116.9)	0	(116.9)
Change in noncontrolling interests in consolidated entities, net	(284.2)								(284.2)
Dividends	(289.0)				(289.0)			(289.0)
Employee share plans:
Share-based compensation	136.4		136.4					136.4
Vested shares	0		(165.6)	165.6
Exercise of options	23.0		(23.1)	46.1				23.0
Tax impact of share-based payment	12.7		12.7					12.7
Purchase of shares	(314.2)			(314.2)				(314.2)
Ending balance at Dec. 31, 2012	9,049.0	98.1	6,141.0	(1,382.9)	2,801.3	128.8	530.5	8,316.8	732.2
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	982.8				940.3			940.3	42.5
Other comprehensive income (loss)	(115.7)						(102.6)	(102.6)	(13.1)
Total comprehensive income (loss)	867.1
Net income (loss) reclassified to appropriated retained earnings	0					(1.4)		(1.4)	1.4
Deconsolidation of CIP	(50.8)					(23.1)		(23.1)	(27.7)
Change in noncontrolling interests in consolidated entities, net	(150.6)								(150.6)
Dividends	(379.7)				(379.7)			(379.7)
Employee share plans:
Share-based compensation	133.1		133.1					133.1
Vested shares	0		(175.7)	175.7
Exercise of options	17.9		(20.3)	38.2				17.9
Settlement of ESPP purchases	5.1	0	1.1	4.0	0	0	0	5.1	0
Tax impact of share-based payment	21.6		21.6					21.6
Purchase of shares	(535.4)			(535.4)				(535.4)
Ending Balance at Dec. 31, 2013	0
Ending balance at Dec. 31, 2013	8,977.3	98.1	6,100.8	(1,700.4)	3,361.9	104.3	427.9	8,392.6	584.7
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	994.5				988.1			988.1	6.4
Other comprehensive income (loss)	(379.1)						(379.1)	(379.1)
Total comprehensive income (loss)	622.0
Net income (loss) reclassified to appropriated retained earnings	0					(85.7)		(85.7)	85.7
Deconsolidation of CIP	(1.0)					(1.0)		(1.0)
Change in noncontrolling interests in consolidated entities, net	117.0								117.0
Dividends	(424.0)				(424.0)			(424.0)
Employee share plans:
Share-based compensation	138.0		138.0					138.0
Vested shares	0		(123.3)	123.3
Exercise of options	11.0		(8.1)	19.1				11.0
Settlement of ESPP purchases	5.0		2.2	2.8				5.0
Tax impact of share-based payment	24.0		24.0					24.0
Purchase of shares	(342.9)			(342.9)				(342.9)
Increase (Decrease) in Temporary Equity [Roll Forward]
Temporary Equity, Net Income	6.6
Temporary Equity, Stock Issued During Period, Value, New Issues	158.9
Ending Balance at Dec. 31, 2014	165.5
Ending balance at Dec. 31, 2014	$ 9,119.8	$ 98.1	$ 6,133.6	$ (1,898.1)	$ 3,926.0	$ 17.6	$ 48.8	$ 8,326.0	$ 793.8