Summary of Significant Accounting Policies - Fair Value Textual (Details) - USD ($) $ in Thousands			1 Months Ended		12 Months Ended
	Jun. 03, 2013	Apr. 04, 2011	Aug. 29, 2014	Jun. 30, 2013	Oct. 29, 2016	Dec. 14, 2015	Oct. 31, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and held to maturity investments					$ 252,500		$ 76,400
Aggregate principal amount of debt					1,750,000		875,000
Maturity date of senior unsecured notes			Aug. 29, 2014
3.0% Senior unsecured notes due April 15, 2016 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Instrument, Frequency of Periodic Payment		semi-annual fixed interest payments due on April 15 and October 15 of each year, commencing
3.0% Senior unsecured notes due April 15, 2016 [Member] | Nonrecurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Long-term debt, fair value							378,600
2.875% Senior unsecured notes due June 1, 2023 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maturity date of senior unsecured notes	Jun. 01, 2023
Debt Instrument, Frequency of Periodic Payment	semi-annual fixed interest payments due on June 1 and December 1 of each year, commencing December 1, 2013
2.875% Senior unsecured notes due June 1, 2023 [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate principal amount of debt	$ 500,000
Interest rate to be paid on long term notes	2.875%
Long-term debt, fair value					$ 501,300		$ 480,900
3.9% Senior unsecured notes due December 15, 2025 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maturity date of senior unsecured notes				Dec. 15, 2025
Debt Instrument, Frequency of Periodic Payment					semi-annual fixed interest payments due on June 15 and December 15 of each year, commencing June 15, 2016
3.9% Senior unsecured notes due December 15, 2025 [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate principal amount of debt						$ 850,000
Interest rate to be paid on long term notes	3.90%
Long-term debt, fair value					$ 901,500
5.3% Senior unsecured notes due December 15, 2045 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Maturity date of senior unsecured notes					Dec. 15, 2045
Debt Instrument, Frequency of Periodic Payment					semi-annual fixed interest payments due on June 15 and December 15 of each year, commencing June 15, 2016
5.3% Senior unsecured notes due December 15, 2045 [Member] | Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate principal amount of debt	$ 400,000
Interest rate to be paid on long term notes	5.30%
Long-term debt, fair value					$ 425,100