Revenue Recognition (Disaggregation Of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue	$ 984.3	$ 1,022.2	$ 2,793.6	$ 2,809.2
Operating Segments
Disaggregation of Revenue [Line Items]
Revenue	984.3	1,022.2	2,793.6	2,809.2
Operating Segments | Licensing
Disaggregation of Revenue [Line Items]
Revenue	5.1	5.0	14.3	15.7
Operating Segments | Other
Disaggregation of Revenue [Line Items]
Revenue	0.6	1.1	2.9	3.6
Operating Segments | NA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	759.4	788.3	2,056.3	2,067.7
Operating Segments | EMEA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	151.5	148.9	505.1	489.2
Operating Segments | LATAM | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	39.0	50.1	132.6	147.3
Operating Segments | APAC | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	28.7	28.8	82.4	85.7
Operating Segments | HHI
Disaggregation of Revenue [Line Items]
Revenue	281.6	354.6	908.4	990.7
Operating Segments | HHI | Licensing
Disaggregation of Revenue [Line Items]
Revenue	0.2	0.3	0.8	0.9
Operating Segments | HHI | Other
Disaggregation of Revenue [Line Items]
Revenue	0.0	0.0	0.0	0.0
Operating Segments | HHI | NA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	272.7	335.9	867.9	938.2
Operating Segments | HHI | EMEA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	0.1	0.4	0.4	0.6
Operating Segments | HHI | LATAM | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	5.1	11.8	25.5	33.8
Operating Segments | HHI | APAC | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	3.5	6.2	13.8	17.2
Operating Segments | HPC
Disaggregation of Revenue [Line Items]
Revenue	250.6	243.4	805.4	782.3
Operating Segments | HPC | Licensing
Disaggregation of Revenue [Line Items]
Revenue	2.0	2.1	6.0	8.2
Operating Segments | HPC | Other
Disaggregation of Revenue [Line Items]
Revenue	0.0	0.0	0.0	0.0
Operating Segments | HPC | NA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	108.7	98.1	323.8	306.4
Operating Segments | HPC | EMEA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	96.3	95.1	337.7	322.7
Operating Segments | HPC | LATAM | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	28.4	34.4	92.6	101.1
Operating Segments | HPC | APAC | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	15.2	13.7	45.3	43.9
Operating Segments | GPC
Disaggregation of Revenue [Line Items]
Revenue	241.5	221.7	684.2	641.3
Operating Segments | GPC | Licensing
Disaggregation of Revenue [Line Items]
Revenue	2.1	1.8	5.9	5.2
Operating Segments | GPC | Other
Disaggregation of Revenue [Line Items]
Revenue	0.6	1.1	2.9	3.6
Operating Segments | GPC | NA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	170.2	153.4	474.9	432.6
Operating Segments | GPC | EMEA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	55.1	53.4	167.0	165.9
Operating Segments | GPC | LATAM | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	3.5	3.1	10.2	9.4
Operating Segments | GPC | APAC | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	10.0	8.9	23.3	24.6
Operating Segments | H&G
Disaggregation of Revenue [Line Items]
Revenue	210.6	202.5	395.6	394.9
Operating Segments | H&G | Licensing
Disaggregation of Revenue [Line Items]
Revenue	0.8	0.8	1.6	1.4
Operating Segments | H&G | Other
Disaggregation of Revenue [Line Items]
Revenue	0.0	0.0	0.0	0.0
Operating Segments | H&G | NA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	207.8	200.9	389.7	390.5
Operating Segments | H&G | EMEA | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	0.0	0.0	0.0	0.0
Operating Segments | H&G | LATAM | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	2.0	0.8	4.3	3.0
Operating Segments | H&G | APAC | Product Sales
Disaggregation of Revenue [Line Items]
Revenue	$ 0.0	$ 0.0	$ 0.0	$ 0.0