Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies Recently Issued Accounting Guidance (Details)

v3.8.0.1
Summary of Significant Accounting Policies Recently Issued Accounting Guidance (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 30, 2018
Sep. 30, 2016
Sep. 30, 2016
Dec. 31, 2016
Accounting Standards Update 2015-17 [Member] | Prepaid Expenses and Other Current Assets [Member]        
Impact of New Pronouncements        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification       $ 80
Accounting Standards Update 2015-17 [Member] | Accounts Payable and Accrued Liabilities [Member]        
Impact of New Pronouncements        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification       (692)
Accounting Standards Update 2015-17 [Member] | Other Assets        
Impact of New Pronouncements        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification       (54)
Accounting Standards Update 2015-17 [Member] | Deferred Tax Asset [Domain]        
Impact of New Pronouncements        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification       $ 666
Accounting Standards Update 2016-09 [Member]        
Impact of New Pronouncements        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Net Income   $ 20 $ 140  
New Accounting Pronouncement or Change in Accounting Principle, Effect of Cash Flow Reclassification     $ 140  
Accounting Standards Update 2016-16 [Member]        
Impact of New Pronouncements        
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification $ 2,800