Pension And Other Benefit Programs (Summary Of Assets Measured At NAV) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015
U.S. Pension Plans [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Investments measured at net asset value	$ 76.8	$ 82.5
Unfunded commitments	3.1	3.8
Non-U.S. Pension Plans [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Investments measured at net asset value	$ 12.1	$ 14.8
Real Estate [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Redemption frequency	Monthly/Quarterly
Real Estate [Member] \| Minimum [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Redemption notice period	2 days	2 days
Real Estate [Member] \| Maximum [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Redemption notice period	90 days	90 days
Real Estate [Member] \| U.S. Pension Plans [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Investments measured at net asset value	$ 73.3	$ 79.7
Unfunded commitments	2.2	2.3
Real Estate [Member] \| Non-U.S. Pension Plans [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Investments measured at net asset value	$ 12.1	14.8
Other Investments [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Redemption frequency	None
Redemption notice period	None
Other Investments [Member] \| U.S. Pension Plans [Member]
Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items]
Investments measured at net asset value	$ 3.5	2.8
Unfunded commitments	$ 0.9	$ 1.5

Fair Value Investments Entities That Calculate Net Asset Value Per Share Investment Redemption Notice Period 2

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- Definition

Fair value of investments in certain entities that calculate net asset value per share, including, but not limited to, by unit, membership interest, or other ownership interest. Investments include, but are not limited to, investments in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=SL6742756-110258

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- Definition

States the frequency (for example, annually, semi-annually, quarterly) with which the entity can redeem its investment, or portion thereof, for each of those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments), by major category.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=SL6742756-110258

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- Definition

Notice period the entity is required to deliver before it can redeem an investment calculated using net asset value per share, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but is not limited to, investments calculated by per unit, per membership interest, other equity or ownership interest and alternative investments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=SL6742756-110258

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 6A
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=66048111&loc=SL6742756-110258

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