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Postretirement and Other Benefits - Fair Value of Plan Assets (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2015	Dec. 31, 2014
United States, Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		$ 128.9	$ 126.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		128.9	126.0
Fair value of plan assets at end of year		116.7	128.9
United States, Pension Benefits [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		1.1	1.1
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		1.1
Fair value of plan assets at end of year		1.2	1.1
United States, Pension Benefits [Member] | Domestic Large Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		7.2	7.2
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		7.2
Fair value of plan assets at end of year		8.0	7.2
United States, Pension Benefits [Member] | Domestic Small Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		5.5	5.5
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		5.5
Fair value of plan assets at end of year		5.3	5.5
United States, Pension Benefits [Member] | International [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		21.3	21.3
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		21.3
Fair value of plan assets at end of year		21.6	21.3
United States, Pension Benefits [Member] | Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		87.0	87.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		87.0
Fair value of plan assets at end of year		80.3	87.0
United States, Pension Benefits [Member] | Alternative Investment [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	[1]	6.8	6.8
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year	[1]	6.8
Fair value of plan assets at end of year	[1]	0.3	6.8
United States, Pension Benefits [Member] | Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		1.1	1.1
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		1.1
Fair value of plan assets at end of year		1.2	1.1
United States, Pension Benefits [Member] | Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		1.1	1.1
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		1.1
Fair value of plan assets at end of year		1.2	1.1
United States, Pension Benefits [Member] | Level 1 [Member] | Domestic Large Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 1 [Member] | Domestic Small Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 1 [Member] | International [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 1 [Member] | Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 1 [Member] | Alternative Investment [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	[1]	0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year	[1]	0.0
Fair value of plan assets at end of year	[1]	0.0	0.0
United States, Pension Benefits [Member] | Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		121.0	121.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		121.0
Fair value of plan assets at end of year		115.2	121.0
United States, Pension Benefits [Member] | Level 2 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 2 [Member] | Domestic Large Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		7.2	7.2
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		7.2
Fair value of plan assets at end of year		8.0	7.2
United States, Pension Benefits [Member] | Level 2 [Member] | Domestic Small Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		5.5	5.5
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		5.5
Fair value of plan assets at end of year		5.3	5.5
United States, Pension Benefits [Member] | Level 2 [Member] | International [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		21.3	21.3
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		21.3
Fair value of plan assets at end of year		21.6	21.3
United States, Pension Benefits [Member] | Level 2 [Member] | Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		87.0	87.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		87.0
Fair value of plan assets at end of year		80.3	87.0
United States, Pension Benefits [Member] | Level 2 [Member] | Alternative Investment [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	[1]	0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year	[1]	0.0
Fair value of plan assets at end of year	[1]	0.0	0.0
United States, Pension Benefits [Member] | Level 3 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		6.8	6.4
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		6.8	6.4
Realized and unrealized gains		0.1	0.5
Purchases		0.5	0.0
Sales		(7.1)	(0.1)
Fair value of plan assets at end of year		0.3	6.8
United States, Pension Benefits [Member] | Level 3 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 3 [Member] | Domestic Large Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 3 [Member] | Domestic Small Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 3 [Member] | International [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 3 [Member] | Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
United States, Pension Benefits [Member] | Level 3 [Member] | Alternative Investment [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	[1]	6.8	6.8
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year	[1]	6.8
Fair value of plan assets at end of year	[1]	0.3	6.8
France, Pension Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		10.2	12.3
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		10.2	12.3
Fair value of plan assets at end of year		8.4	10.2
France, Pension Benefits [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		1.1	1.1
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		1.1
Fair value of plan assets at end of year		1.0	1.1
France, Pension Benefits [Member] | Domestic Large Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		1.7	1.7
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		1.7
Fair value of plan assets at end of year		1.7	1.7
France, Pension Benefits [Member] | Domestic Small Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
France, Pension Benefits [Member] | International [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
France, Pension Benefits [Member] | Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		7.3	7.3
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		7.3
Fair value of plan assets at end of year		5.5	7.3
France, Pension Benefits [Member] | Alternative Investment [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	[1]	0.1	0.1
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year	[1]	0.1
Fair value of plan assets at end of year	[1]	0.2	0.1
France, Pension Benefits [Member] | Level 1 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		2.8	2.8
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		2.8
Fair value of plan assets at end of year		2.7	2.8
France, Pension Benefits [Member] | Level 1 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		1.1	1.1
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		1.1
Fair value of plan assets at end of year		1.0	1.1
France, Pension Benefits [Member] | Level 1 [Member] | Domestic Large Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		1.7	1.7
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		1.7
Fair value of plan assets at end of year		1.7	1.7
France, Pension Benefits [Member] | Level 1 [Member] | Domestic Small Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
France, Pension Benefits [Member] | Level 1 [Member] | International [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
France, Pension Benefits [Member] | Level 1 [Member] | Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
France, Pension Benefits [Member] | Level 1 [Member] | Alternative Investment [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	[1]	0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year	[1]	0.0
Fair value of plan assets at end of year	[1]	0.0	0.0
France, Pension Benefits [Member] | Level 2 [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		7.4	7.4
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		7.4
Fair value of plan assets at end of year		5.7	7.4
France, Pension Benefits [Member] | Level 2 [Member] | Cash and Cash Equivalents [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
France, Pension Benefits [Member] | Level 2 [Member] | Domestic Large Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
France, Pension Benefits [Member] | Level 2 [Member] | Domestic Small Cap [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
France, Pension Benefits [Member] | Level 2 [Member] | International [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		0.0	0.0
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		0.0
Fair value of plan assets at end of year		0.0	0.0
France, Pension Benefits [Member] | Level 2 [Member] | Fixed Income Securities [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets		7.3	7.3
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year		7.3
Fair value of plan assets at end of year		5.5	7.3
France, Pension Benefits [Member] | Level 2 [Member] | Alternative Investment [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Fair value of plan assets	[1]	0.1	0.1
Change in Level 3 Asset Values
Fair value of plan assets at beginning of year	[1]	0.1
Fair value of plan assets at end of year	[1]	$ 0.2	$ 0.1
[1] Alternative investments include ownership interests in shares of registered investment companies.

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- Definition

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+ References

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- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 30
-Section 35
-Paragraph 50
-URI http://asc.fasb.org/extlink&oid=49178875&loc=d3e12355-114930

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920

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