Pension And Other Benefit Programs (Summary Of Fair Value Of Assets Plan) (Details) - USD ($) $ in Millions	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	$ 1,436.1	$ 1,754.7
Investments measured at net asset value	76.8	82.5
Net assets	1,512.9	1,837.2	$ 1,986.3
U.S. Pension Plans [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	363.2	455.8
U.S. Pension Plans [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	1,070.1	1,296.0
U.S. Pension Plans [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	2.8	2.9
U.S. Pension Plans [Member] | Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	831.7	1,069.9
U.S. Pension Plans [Member] | Bonds [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	831.7	1,069.9
U.S. Pension Plans [Member] | Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	389.1	507.0
U.S. Pension Plans [Member] | Equities [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	329.0	443.0
U.S. Pension Plans [Member] | Equities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	60.1	64.0
U.S. Pension Plans [Member] | High Yield Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	67.6	82.0
U.S. Pension Plans [Member] | High Yield Bonds [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	67.6	82.0
U.S. Pension Plans [Member] | Real Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	32.5	32.1
U.S. Pension Plans [Member] | Real Assets [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	32.5	32.1
U.S. Pension Plans [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Investments measured at net asset value	73.3	79.7
U.S. Pension Plans [Member] | Other Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	2.8	2.9
Investments measured at net asset value	3.5	2.8
U.S. Pension Plans [Member] | Other Investments [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	2.8	2.9
U.S. Pension Plans [Member] | Cash And Other Short Term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	112.4	60.8
U.S. Pension Plans [Member] | Cash And Other Short Term Investments [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	34.2	12.8
U.S. Pension Plans [Member] | Cash And Other Short Term Investments [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	78.2	48.0
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	178.3	196.1
Investments measured at net asset value	12.1	14.8
Net assets	190.4	210.9	$ 232.4
Non-U.S. Pension Plans [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	8.0	5.7
Non-U.S. Pension Plans [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	165.7	185.5
Non-U.S. Pension Plans [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	4.6	4.9
Non-U.S. Pension Plans [Member] | Bonds [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	93.9	97.0
Non-U.S. Pension Plans [Member] | Bonds [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	1.0	1.1
Non-U.S. Pension Plans [Member] | Bonds [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	92.9	95.9
Non-U.S. Pension Plans [Member] | Equities [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	72.5	89.1
Non-U.S. Pension Plans [Member] | Equities [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	1.0	1.1
Non-U.S. Pension Plans [Member] | Equities [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	71.5	88.0
Non-U.S. Pension Plans [Member] | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	0.8	0.8
Investments measured at net asset value	12.1	14.8
Non-U.S. Pension Plans [Member] | Real Estate [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	0.1	0.1
Non-U.S. Pension Plans [Member] | Real Estate [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	0.7	0.7
Non-U.S. Pension Plans [Member] | Other Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	5.2	5.8
Non-U.S. Pension Plans [Member] | Other Investments [Member] | Level 2 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	0.6	0.9
Non-U.S. Pension Plans [Member] | Other Investments [Member] | Level 3 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	4.6	4.9
Non-U.S. Pension Plans [Member] | Cash And Other Short Term Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	5.9	3.4
Non-U.S. Pension Plans [Member] | Cash And Other Short Term Investments [Member] | Level 1 [Member]
Defined Benefit Plan Disclosure [Line Items]
Net assets measured at fair value	$ 5.9	$ 3.4