Commitments, Contingencies and Debt - Debt Narrative (Details) $ in Millions | Sep. 25, 2021USD ($)numberOfLenders | Jun. 26, 2021USD ($) | Apr. 01, 2021USD ($) | Mar. 09, 2021USD ($) | Dec. 26, 2020USD ($) | Sep. 25, 2021USD ($)numberOfLenders | Jun. 26, 2021USD ($) | Feb. 28, 2021USD ($) | Jul. 31, 2020USD ($) | Jul. 31, 2020CAD ($) | Jun. 27, 2020USD ($) | May 31, 2020USD ($) | Feb. 29, 2020USD ($) | Dec. 25, 2021USD ($) | Sep. 25, 2021USD ($)numberOfLenders | Jun. 26, 2021USD ($) | Mar. 27, 2021USD ($) | Mar. 28, 2020USD ($) | Sep. 25, 2021USD ($)numberOfLenders | Sep. 26, 2020USD ($) | Jun. 03, 2020 | May 19, 2020 | May 18, 2020USD ($) | Mar. 30, 2020USD ($) |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Minimum shareholder's equity required to maintain excluding accumulated other comprehensive income/(losses) | $ 35,000,000,000 | | | | | $ 35,000,000,000 | | | | | | | | | $ 35,000,000,000 | | | | $ 35,000,000,000 | | | | | |
Debt prepayment and extinguishment costs | | | | | | | | | | | | | | | | | | | 577,000,000 | $ 101,000,000 | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 4,145,000,000 | 4,395,000,000 | | | | |
Fair value of total debt | 28,400,000,000 | | | | $ 32,100,000,000 | 28,400,000,000 | | | | | | | | | 28,400,000,000 | | | | 28,400,000,000 | | | | | |
Carrying value of total debt | 24,000,000,000 | | | | 28,300,000,000 | 24,000,000,000 | | | | | | | | | 24,000,000,000 | | | | 24,000,000,000 | | | | | |
The 2020 Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Debt issuance costs, net | | | | | | | | | | | | $ 31,000,000 | | | | | | | | | | | | |
Senior notes due in September 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | 34,000,000 | | | | | | | | | | | | | | | | | | |
Senior Notes | Senior notes due in February 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | $ 111,000,000 | | | | | | | | | | | | | | | | |
Senior Notes | Senior notes due in February 2020 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | $ 405,000,000 | | | | | | | | | | | |
Q1 2021 Tender Offer, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Gain (loss) on extinguishment of debt | | | | | | | | | | | | | | | | | $ 106,000,000 | | | | | | | |
Q2 2021 Tender Offer, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Gain (loss) on extinguishment of debt | | | | | | | | | | | | | | | | $ 256,000,000 | | | | | | | | |
2021 Tender Offers, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Gain (loss) on extinguishment of debt | | | | | | | | | | | | | | | | | | | (362,000,000) | | | | | |
Debt prepayment and extinguishment costs | | | | | | | | | | | | | | | | | | | 369,000,000 | | | | | |
Write off of unamortized debt premiums | | | | | | | | | | | | | | | | | | | 20,000,000 | | | | | |
Write off of deferred debt issuance costs | | | | | | | | | | | | | | | | | | | 7,000,000 | | | | | |
Write off of unamortized debt discounts | | | | | | | | | | | | | | | | | | | 6,000,000 | | | | | |
2020 Tender Offer, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Gain (loss) on extinguishment of debt | | | | | | | | | | | | | | | | | | | | (71,000,000) | | | | |
Debt prepayment and extinguishment costs | | | | | | | | | | | | | | | | | | | | 68,000,000 | | | | |
Write off of unamortized debt premiums | | | | | | | | | | | | | | | | | | | | 1,000,000 | | | | |
Write off of deferred debt issuance costs | | | | | | | | | | | | | | | | | | | | 3,000,000 | | | | |
Write off of unamortized debt discounts | | | | | | | | | | | | | | | | | | | | 1,000,000 | | | | |
Q2 2021 Repurchases, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Gain (loss) on extinguishment of debt | | | | | | | | | | | | | | | | (28,000,000) | | | (80,000,000) | | | | | |
Debt prepayment and extinguishment costs | | | | | | | | | | | | | | | | | | | 82,000,000 | | | | | |
Write off of unamortized debt premiums | | | | | | | | | | | | | | | | | | | 5,000,000 | | | | | |
Write off of deferred debt issuance costs | | | | | | | | | | | | | | | | | | | 2,000,000 | | | | | |
Write off of unamortized debt discounts | | | | | | | | | | | | | | | | | | | 1,000,000 | | | | | |
Q3 2021 Repurchases, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Gain (loss) on extinguishment of debt | | | | | | | | | | | | | | | (52,000,000) | | | | | | | | | |
2021 Debt Redemption, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Gain (loss) on extinguishment of debt | | | | | | | | | | | | | | | (95,000,000) | (34,000,000) | | | (129,000,000) | | | | | |
Debt prepayment and extinguishment costs | | | | | | | | | | | | | | | | | | | 126,000,000 | | | | | |
Write off of deferred debt issuance costs | | | | | | | | | | | | | | | | | | | 3,000,000 | | | | | |
2020 Debt Redemption, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Gain (loss) on extinguishment of debt | | | | | | | | | | | | | | | | | | | | (38,000,000) | | | | |
Debt prepayment and extinguishment costs | | | | | | | | | | | | | | | | | | | | 33,000,000 | | | | |
Write off of deferred debt issuance costs | | | | | | | | | | | | | | | | | | | | $ 5,000,000 | | | | |
Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Outstanding aggregate principal amount | $ 23,634,000,000 | | | | 27,893,000,000 | $ 23,634,000,000 | | | | | | | | | $ 23,634,000,000 | | | | $ 23,634,000,000 | | | | | |
Senior Notes | Senior Notes Due July 2025 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 3.95% | | | | | 3.95% | | | | | | | | | 3.95% | | | | 3.95% | | | | | |
Repayments of long-term debt | | $ 797,000,000 | | | | | | | | | | | | | | | | | | | | | | |
Outstanding aggregate principal amount | $ 0 | | | | 1,609,000,000 | $ 0 | | | | | | | | | $ 0 | | | | $ 0 | | | | | |
Senior Notes | Senior Notes Due June 2026 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 3.00% | | | | | 3.00% | | | | | | | | | 3.00% | | | | 3.00% | | | | | |
Outstanding aggregate principal amount | $ 1,876,000,000 | | | | 2,000,000,000 | $ 1,876,000,000 | | | | | | | | | $ 1,876,000,000 | | | | $ 1,876,000,000 | | | | | |
Senior Notes | Senior Notes Due June 2023 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 4.00% | | | | | 4.00% | | | | | | | | | 4.00% | | | | 4.00% | | | | | |
Outstanding aggregate principal amount | $ 0 | | | | 447,000,000 | $ 0 | | | | | | | | | $ 0 | | | | $ 0 | | | | | |
Senior Notes | Senior Notes Due June 2022 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 3.50% | | | | | 3.50% | | | | | | | | | 3.50% | | | | 3.50% | | | | | |
Outstanding aggregate principal amount | $ 631,000,000 | | | | 631,000,000 | $ 631,000,000 | | | | | | | | | $ 631,000,000 | | | | $ 631,000,000 | | | | | |
Senior Notes | Senior Notes Due June 2042 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 5.00% | | | | | 5.00% | | | | | | | | | 5.00% | | | | 5.00% | | | | | |
Outstanding aggregate principal amount | $ 1,598,000,000 | | | | 2,000,000,000 | $ 1,598,000,000 | | | | | | | | | $ 1,598,000,000 | | | | $ 1,598,000,000 | | | | | |
Senior Notes | Senior Notes Due July 2035 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 5.00% | | | | | 5.00% | | | | | | | | | 5.00% | | | | 5.00% | | | | | |
Outstanding aggregate principal amount | $ 798,000,000 | | | | 1,000,000,000 | $ 798,000,000 | | | | | | | | | $ 798,000,000 | | | | $ 798,000,000 | | | | | |
Senior Notes | Senior Notes Due January 2029 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 4.625% | | | | | 4.625% | | | | | | | | | 4.625% | | | | 4.625% | | | | | |
Outstanding aggregate principal amount | $ 727,000,000 | | | | 1,100,000,000 | $ 727,000,000 | | | | | | | | | $ 727,000,000 | | | | $ 727,000,000 | | | | | |
Senior Notes | Senior Notes Due October 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 4.625% | | | | | 4.625% | | | | | | | | | 4.625% | | | | 4.625% | | | | | |
Outstanding aggregate principal amount | $ 399,000,000 | | | | 500,000,000 | $ 399,000,000 | | | | | | | | | $ 399,000,000 | | | | $ 399,000,000 | | | | | |
Senior Notes | Senior Notes Due April 2030 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 3.75% | | | | | 3.75% | | | | | | | | | 3.75% | | | | 3.75% | | | | | |
Outstanding aggregate principal amount | $ 743,000,000 | | | | 1,000,000,000 | $ 743,000,000 | | | | | | | | | $ 743,000,000 | | | | $ 743,000,000 | | | | | |
Senior Notes | Senior Notes Due February 2040 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 6.50% | | | | | 6.50% | | | | | | | | | 6.50% | | | | 6.50% | | | | | |
Outstanding aggregate principal amount | $ 731,000,000 | | | | 788,000,000 | $ 731,000,000 | | | | | | | | | $ 731,000,000 | | | | $ 731,000,000 | | | | | |
Senior Notes | Senior Notes Due July 2028 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 6.375% | | | | | 6.375% | | | | | | | | | 6.375% | | | | 6.375% | | | | | |
Outstanding aggregate principal amount | $ 218,000,000 | | | | 235,000,000 | $ 218,000,000 | | | | | | | | | $ 218,000,000 | | | | $ 218,000,000 | | | | | |
Senior Notes | Senior Notes Due March 2032 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 6.75% | | | | | 6.75% | | | | | | | | | 6.75% | | | | 6.75% | | | | | |
Outstanding aggregate principal amount | $ 371,000,000 | | | | 437,000,000 | $ 371,000,000 | | | | | | | | | $ 371,000,000 | | | | $ 371,000,000 | | | | | |
Senior Notes | Senior Notes Due January 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 6.875% | | | | | 6.875% | | | | | | | | | 6.875% | | | | 6.875% | | | | | |
Outstanding aggregate principal amount | $ 834,000,000 | | | | 878,000,000 | $ 834,000,000 | | | | | | | | | $ 834,000,000 | | | | $ 834,000,000 | | | | | |
Senior Notes | Senior Notes Due August 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 7.125% | | | | | 7.125% | | | | | | | | | 7.125% | | | | 7.125% | | | | | |
Outstanding aggregate principal amount | $ 876,000,000 | | | | 931,000,000 | $ 876,000,000 | | | | | | | | | $ 876,000,000 | | | | $ 876,000,000 | | | | | |
Senior Notes | Senior Notes Due in February 2040, July 2045, And June 2046 | Forecast | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | $ 44,000,000 | | | | | | | | | | |
Senior Notes | Senior notes due in February 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Outstanding aggregate principal amount | $ 0 | | | | 111,000,000 | $ 0 | | | | | | | | | $ 0 | | | | $ 0 | | | | | |
Senior Notes | Senior notes due in September 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | 3.125% | | | | | 3.125% | | | | | | | | | 3.125% | | | | 3.125% | | | | | |
Outstanding aggregate principal amount | $ 0 | | | | 34,000,000 | $ 0 | | | | | | | | | $ 0 | | | | $ 0 | | | | | |
Senior Notes | Senior Notes Due July 2020 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | $ 200,000,000 | | | | | | | | | | | | | | | |
Senior Notes | Canadian Dollar Senior Notes Due July 2020 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | $ 500 | | | | | | | | | | | | | | |
Senior Notes | Q1 2021 Tender Offer, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | $ 900,000,000 | | | | | | | | | | | | | | | | | | | | |
Senior Notes | Q2 2021 Tender Offer, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | $ 1,400,000,000 | | | | | | | | | | | | | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 2,323,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due July 2025 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 812,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due June 2026 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 88,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due June 2023 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due June 2022 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due June 2042 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 334,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due July 2035 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 187,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due January 2029 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 345,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due October 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 101,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due April 2030 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 254,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due February 2040 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 39,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due July 2028 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 17,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due March 2032 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 66,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due January 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 29,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior Notes Due August 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 51,000,000 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior notes due in February 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Tender Offers, Senior Notes | Senior notes due in September 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | | | | | | |
Senior Notes | 2020 Tender Offer, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | 2,100,000,000 | | | | | | | | | | | | |
Senior Notes | 2020 Tender Offer, Senior Notes | Senior Notes Due July 2025 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | | 3.95% | | |
Senior Notes | 2020 Tender Offer, Senior Notes | Senior Notes Due June 2026 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | | 3.00% | | |
Senior Notes | 2020 Tender Offer, Senior Notes | Senior Notes Due June 2023 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | | 4.00% | | |
Senior Notes | 2020 Tender Offer, Senior Notes | Senior Notes Due June 2022 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | | 3.50% | | |
Senior Notes | 2020 Tender Offer, Senior Notes | Senior Notes Due July 2022 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | | 3.50% | | |
Senior Notes | 2021 Repurchases, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 428,000,000 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due July 2025 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due June 2026 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 36,000,000 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due June 2023 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due June 2022 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due June 2042 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 68,000,000 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due July 2035 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 15,000,000 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due January 2029 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 28,000,000 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due October 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due April 2030 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 3,000,000 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due February 2040 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 18,000,000 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due July 2028 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due March 2032 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due January 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 15,000,000 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior Notes Due August 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 4,000,000 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior notes due in February 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Repurchases, Senior Notes | Senior notes due in September 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | | | | | | | | | |
Senior Notes | Q2 2021 Repurchases, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | | $ 207,000,000 | | | | | | | | |
Senior Notes | Q3 2021 Repurchases, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | | | | 221,000,000 | | | | | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 1,244,000,000 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due July 2025 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 797,000,000 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due June 2026 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due June 2023 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | $ 447,000,000 | | | | | | | | | | | | | | | | 447,000,000 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due June 2022 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due June 2042 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due July 2035 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due January 2029 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due October 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due April 2030 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due February 2040 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due July 2028 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due March 2032 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due January 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior Notes Due August 2039 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior notes due in February 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | 0 | | | | | |
Senior Notes | 2021 Debt Redemption, Senior Notes | Senior notes due in September 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Repayments of long-term debt | | | | | | | | | | | | | | | | | | | | | | | | |
Senior Notes | 2020 Debt Redemption, Senior Notes | Senior Notes Due June 2021 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | 3.375% | | | |
Repayments of long-term debt | | | | | | | | | | | $ 300,000,000 | | | | | | | | | | | | | |
Senior Notes | 2020 Debt Redemption, Senior Notes | Senior Secured Notes due February 2025 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | 4.875% | | | |
Repayments of long-term debt | | | | | | | | | | | $ 976,000,000 | | | | | | | | | | | | | |
Senior Notes | Maximum | Q1 2021 Tender Offer, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | $ 1,000,000,000 | | | | | | | | | | | | | | | | | | | | |
Senior Notes | Maximum | Q2 2021 Tender Offer, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | $ 2,800,000,000 | | | | | | | | | | | | | | | | | |
Senior Notes | Maximum | 2020 Tender Offer, Senior Notes | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Amount repurchased | | | | | | | | | | | | $ 2,200,000,000 | | | | | | | | | | | | |
2020 Senior Notes | Senior Notes Due May 2027 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | | | 3.875% | |
Outstanding aggregate principal amount | | | | | | | | | | | | | | | | | | | | | | | $ 1,350,000,000 | |
2020 Senior Notes | Senior Notes Due March 2031 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | | | 4.25% | |
Outstanding aggregate principal amount | | | | | | | | | | | | | | | | | | | | | | | $ 1,350,000,000 | |
2020 Senior Notes | Senior Notes Due June 2050 | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Interest rate | | | | | | | | | | | | | | | | | | | | | | | 5.50% | |
Outstanding aggregate principal amount | | | | | | | | | | | | | | | | | | | | | | | $ 800,000,000 | |
Senior unsecured revolving credit facility | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Line of credit facility, maximum borrowing capacity | 4,000,000,000 | | | | | 4,000,000,000 | | | | | | | | | 4,000,000,000 | | | | 4,000,000,000 | | | | | |
Maximum amount of credit facility outstanding during the period | | | | | | | | | | | | | | | | | | $ 4,000,000,000 | | | | | | |
Borrowings under credit facility | 0 | | | | $ 0 | | | | | | | | | | | | | | 0 | | | | | |
Senior unsecured revolving credit facility | Amendment To Credit Agreement | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Line of credit facility, maximum borrowing capacity | $ 100,000,000 | | | | | $ 100,000,000 | | | | | | | | | $ 100,000,000 | | | | $ 100,000,000 | | | | | |
Number of additional lenders | numberOfLenders | 2 | | | | | 2 | | | | | | | | | 2 | | | | 2 | | | | | |
Senior unsecured revolving credit facility | Through July 6, 2023 | Amendment To Credit Agreement | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Line of credit facility, maximum borrowing capacity | $ 4,100,000,000 | | | | | $ 4,100,000,000 | | | | | | | | | $ 4,100,000,000 | | | | $ 4,100,000,000 | | | | | |
Senior unsecured revolving credit facility | Through July 6, 2024 | Amendment To Credit Agreement | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Line of credit facility, maximum borrowing capacity | 4,000,000,000 | | | | | 4,000,000,000 | | | | | | | | | 4,000,000,000 | | | | 4,000,000,000 | | | | | |
Senior unsecured revolving credit facility | Lender One | Amendment To Credit Agreement | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Line of credit facility, maximum borrowing capacity | 50,000,000 | | | | | 50,000,000 | | | | | | | | | 50,000,000 | | | | 50,000,000 | | | | | |
Senior unsecured revolving credit facility | Lender Two | Amendment To Credit Agreement | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Line of credit facility, maximum borrowing capacity | 50,000,000 | | | | | 50,000,000 | | | | | | | | | 50,000,000 | | | | 50,000,000 | | | | | |
Euro equivalent swingline facility | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Line of credit facility, maximum borrowing capacity | 400,000,000 | | | | | 400,000,000 | | | | | | | | | 400,000,000 | | | | 400,000,000 | | | | | |
Senior unsecured revolving credit facility, extension agreement | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Line of credit facility, maximum borrowing capacity | $ 3,900,000,000 | | | | | $ 3,900,000,000 | | | | | | | | | 3,900,000,000 | | | | $ 3,900,000,000 | | | | | |
Uncommitted revolving credit line | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Line of credit facility, maximum borrowing capacity | | | | | | | | | | | | | | | | | | | | | | | | $ 300,000,000 |
SEC Investigation | Settled Litigation | | | | | | | | | | | | | | | | | | | | | | | | |
Debt Instrument [Line Items] | | | | | | | | | | | | | | | | | | | | | | | | |
Payments for Legal Settlements | | | | | | | | | | | | | | | $ 62,000,000 | | | | | | | | | |