Fair Value Measurements (Details) (USD $) In Millions, unless otherwise specified	Sep. 26, 2014
Deferred Compensation Plan Money Market Funds [Member]
Assets measured at fair value on recurring basis
Money market fund	$ 30.9
Deferred Compensation Plan Stock Fund [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	56.6
Deferred Compensation Plan Equity Securities [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	30.1
Pension Plan Stock Funds [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	32.7
Pension Plan Government Securities [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities, debt securities	48.8
Deferred Compensation Plan [Member]
Liabilities measured at fair value on recurring basis
Deferred compensation plans	118.9
Foreign currency forward contracts [Member]
Assets measured at fair value on recurring basis
Foreign currency forward contracts, assets	0.3
Liabilities measured at fair value on recurring basis
Foreign currency forward contract, liabilities	1.8
Pension Plan Corporate Bonds [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities, debt securities	9.1
Fair Value, Inputs, Level 1 [Member] | Deferred Compensation Plan Money Market Funds [Member]
Assets measured at fair value on recurring basis
Money market fund	30.9
Fair Value, Inputs, Level 1 [Member] | Deferred Compensation Plan Stock Fund [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	56.6
Fair Value, Inputs, Level 1 [Member] | Deferred Compensation Plan Equity Securities [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	30.1
Fair Value, Inputs, Level 1 [Member] | Pension Plan Stock Funds [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	32.7
Fair Value, Inputs, Level 1 [Member] | Pension Plan Government Securities [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities, debt securities	48.8
Fair Value, Inputs, Level 1 [Member] | Deferred Compensation Plan [Member]
Liabilities measured at fair value on recurring basis
Deferred compensation plans	37.1
Fair Value, Inputs, Level 1 [Member] | Foreign currency forward contracts [Member]
Assets measured at fair value on recurring basis
Foreign currency forward contracts, assets	0
Liabilities measured at fair value on recurring basis
Foreign currency forward contract, liabilities	0
Fair Value, Inputs, Level 1 [Member] | Pension Plan Corporate Bonds [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities, debt securities	9.1
Fair Value, Inputs, Level 2 [Member] | Deferred Compensation Plan Money Market Funds [Member]
Assets measured at fair value on recurring basis
Money market fund	0
Fair Value, Inputs, Level 2 [Member] | Deferred Compensation Plan Stock Fund [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	0
Fair Value, Inputs, Level 2 [Member] | Deferred Compensation Plan Equity Securities [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	0
Fair Value, Inputs, Level 2 [Member] | Pension Plan Stock Funds [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	0
Fair Value, Inputs, Level 2 [Member] | Pension Plan Government Securities [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities, debt securities	0
Fair Value, Inputs, Level 2 [Member] | Deferred Compensation Plan [Member]
Liabilities measured at fair value on recurring basis
Deferred compensation plans	81.8
Fair Value, Inputs, Level 2 [Member] | Foreign currency forward contracts [Member]
Assets measured at fair value on recurring basis
Foreign currency forward contracts, assets	0.3
Liabilities measured at fair value on recurring basis
Foreign currency forward contract, liabilities	1.8
Fair Value, Inputs, Level 2 [Member] | Pension Plan Corporate Bonds [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities, debt securities	0
Fair Value, Inputs, Level 3 [Member] | Deferred Compensation Plan Money Market Funds [Member]
Assets measured at fair value on recurring basis
Money market fund	0
Fair Value, Inputs, Level 3 [Member] | Deferred Compensation Plan Stock Fund [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	0
Fair Value, Inputs, Level 3 [Member] | Deferred Compensation Plan Equity Securities [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	0
Fair Value, Inputs, Level 3 [Member] | Pension Plan Stock Funds [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities	0
Fair Value, Inputs, Level 3 [Member] | Pension Plan Government Securities [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities, debt securities	0
Fair Value, Inputs, Level 3 [Member] | Deferred Compensation Plan [Member]
Liabilities measured at fair value on recurring basis
Deferred compensation plans	0
Fair Value, Inputs, Level 3 [Member] | Foreign currency forward contracts [Member]
Assets measured at fair value on recurring basis
Foreign currency forward contracts, assets	0
Liabilities measured at fair value on recurring basis
Foreign currency forward contract, liabilities	0
Fair Value, Inputs, Level 3 [Member] | Pension Plan Corporate Bonds [Member]
Assets measured at fair value on recurring basis
Available-for-sale securities, debt securities	$ 0