v3.5.0.1

Basis of Presentation and Summary of Significant Accounting Policies (Details) | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Mar. 31, 2016 USD ($) Operating_segment $ / shares | Sep. 25, 2015 USD ($) $ / shares | May 02, 2016 USD ($) $ / shares | Apr. 01, 2016 USD ($)
Common stock, par value | $ / shares | $ 0.01 | $ 0.01 |  |
Fiscal Period Duration |  | 364 days |  |
Number of operating segments | Operating_segment | 2 |  |  |
Prepaid Expense, Current | $ 22,000,000 | $ 15,000,000 |  |
5.250% Note Due 2020 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.25% |  |  |
6.250% Note due 2021 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.25% |  |  |
3.500% Note due 2022 [Member] | Unsecured Debt [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.50% |  |  |
4.125% Note due 2023 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.125% |  |  |
4.875% Note due 2042 [Member] | Unsecured Debt [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.875% |  |  |
2.250% Note due 2017 [Member] | Unsecured Debt [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 2.25% |  |  |
Debt Instrument, Face Amount | $ 750,000,000 |  |  |
4.125% Notes due 2019 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.125% |  |  |
Debt Instrument, Face Amount | $ 500,000,000 |  |  |
Scenario, Forecast [Member] | Prime Security Services [Member] |  |  |  |
Business Acquisition, Share Price | $ / shares |  |  | $ 42.00 |
Scenario, Forecast [Member] | 4.875% Note due 2032 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 4.875% |
Subsequent Event [Member] | 2.250% Note due 2017 [Member] | Unsecured Debt [Member] |  |  |  |
Debt Instrument, Tender Received, Face Amount |  |  |  | $ 667,000,000
Debt Instrument, Tender Remaining, Face Amount |  |  |  | 83,000,000
Subsequent Event [Member] | 4.125% Notes due 2019 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument, Tender Received, Face Amount |  |  |  | 453,000,000
Debt Instrument, Tender Remaining, Face Amount |  |  |  | $ 47,000,000
Subsequent Event [Member] | 4.875% Note due 2032 [Member] | Senior Notes [Member] |  |  |  |
Exchange Note Issued, Face Value |  |  | $ 718,000,000 |
Subsequent Event [Member] | 4.875% Note due 2032 [Member] | Senior Notes [Member] |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 4.875% |
Exchange Note Outstanding, Face Value |  |  | $ 32,000,000 |

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