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COMPANY-SPONSORED EMPLOYEE BENEFIT PLANS - FAIR VALUE MEASUREMENTS (Details) - Pension Benefits - USD ($)
Jun. 27, 2020
Jun. 29, 2019
Jun. 30, 2018
United States      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 4,408,739,000 $ 3,984,154,000  
United States | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 101,943,000 81,247,000  
United States | Equity Securities      
Defined Benefit Plan Disclosure [Line Items]      
Unfunded commitments related to investments 0 0  
United States | U.S. equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 575,035,000 468,923,000  
United States | International equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 252,687,000 202,493,000  
United States | Alternative investment funds - Hedge fund of funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 233,792,000 226,409,000  
Unfunded commitments related to investments 0 0  
United States | Alternative investment funds - Real estate funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 87,730,000 93,592,000  
Unfunded commitments related to investments $ 2,000,000.0 $ 10,300,000  
Nonredeemable portion of investment, percent 5.00% 15.00%  
United States | Alternative investment funds - Private equity funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 74,631,000 $ 84,266,000  
Unfunded commitments related to investments 16,200,000 17,600,000  
United States | Corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,220,702,000 1,987,964,000  
United States | U.S. government and agency securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 834,394,000 821,118,000  
United States | Other      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 27,825,000 18,142,000  
United States | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 34,475,000 135,277,000  
United States | Level 1 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 34,475,000 39,981,000  
United States | Level 1 | U.S. equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 1 | International equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 95,296,000  
United States | Level 1 | Alternative investment funds - Hedge fund of funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 1 | Alternative investment funds - Real estate funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 1 | Alternative investment funds - Private equity funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 1 | Corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 1 | U.S. government and agency securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 1 | Other      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,609,638,000 2,346,001,000  
United States | Level 2 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 67,468,000 41,266,000  
United States | Level 2 | U.S. equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 2 | International equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 2 | Alternative investment funds - Hedge fund of funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 2 | Alternative investment funds - Real estate funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 2 | Alternative investment funds - Private equity funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 2 | Corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,220,702,000 1,987,964,000  
United States | Level 2 | U.S. government and agency securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 293,643,000 298,629,000  
United States | Level 2 | Other      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 27,825,000 18,142,000  
United States | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 3 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 3 | U.S. equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 3 | International equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 3 | Alternative investment funds - Hedge fund of funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 3 | Alternative investment funds - Real estate funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 3 | Alternative investment funds - Private equity funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 3 | Corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 3 | U.S. government and agency securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Level 3 | Other      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Fair Value Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 1,764,626,000 1,502,876,000  
United States | Fair Value Measured at NAV | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Fair Value Measured at NAV | U.S. equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 575,035,000 468,923,000  
United States | Fair Value Measured at NAV | International equity      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 252,687,000 107,197,000  
United States | Fair Value Measured at NAV | Alternative investment funds - Hedge fund of funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 233,792,000 226,409,000  
United States | Fair Value Measured at NAV | Alternative investment funds - Real estate funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 87,730,000 93,592,000  
United States | Fair Value Measured at NAV | Alternative investment funds - Private equity funds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 74,631,000 84,266,000  
United States | Fair Value Measured at NAV | Corporate bonds      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United States | Fair Value Measured at NAV | U.S. government and agency securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 540,751,000 522,489,000  
United States | Fair Value Measured at NAV | Other      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
International Plan      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 288,191,000 264,746,000 $ 258,028,000
United Kingdom      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 288,191,000 264,746,000  
United Kingdom | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,510,000 13,372,000  
United Kingdom | U.K. government securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 135,318,000 63,363,000  
United Kingdom | Liability hedging assets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 123,000 575,000  
Fair value of derivative assets 6,800,000 9,300,000  
Fair value of derivative liabilities 6,600,000 8,700,000  
United Kingdom | Common contractual fund      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 150,240,000 187,436,000  
Unfunded commitments related to investments 14,900,000 13,900,000  
United Kingdom | Level 1      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,510,000 13,372,000  
United Kingdom | Level 1 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 2,510,000 13,372,000  
United Kingdom | Level 1 | U.K. government securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Level 1 | Liability hedging assets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Level 1 | Common contractual fund      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Level 2      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 135,441,000 63,938,000  
United Kingdom | Level 2 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Level 2 | U.K. government securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 135,318,000 63,363,000  
United Kingdom | Level 2 | Liability hedging assets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 123,000 575,000  
United Kingdom | Level 2 | Common contractual fund      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Level 3      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Level 3 | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Level 3 | U.K. government securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Level 3 | Liability hedging assets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Level 3 | Common contractual fund      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Fair Value Measured at NAV      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 150,240,000 187,436,000  
United Kingdom | Fair Value Measured at NAV | Cash and cash equivalents      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Fair Value Measured at NAV | U.K. government securities      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Fair Value Measured at NAV | Liability hedging assets      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets 0 0  
United Kingdom | Fair Value Measured at NAV | Common contractual fund      
Defined Benefit Plan Disclosure [Line Items]      
Fair value of plan assets $ 150,240,000 $ 187,436,000