Quarterly report pursuant to Section 13 or 15(d)

Carrying Value of Outstanding Debt (Detail)

v3.19.2
Carrying Value of Outstanding Debt (Detail) - USD ($)
6 Months Ended
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2018
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 24,496,000,000    
Debt instrument, stated interest rate 8.375%    
Total debt $ 23,379,000,000   $ 22,736,000,000
Less current maturities (2,952,000,000)   (2,805,000,000)
Long-Term Debt and Finance Leases 20,427,000,000   19,931,000,000
Commercial Paper      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 2,871,000,000    
Maturity - Minimum Date Mar. 31, 2019    
Maturity - Maximum Date Dec. 31, 2020    
Total debt $ 2,871,000,000   2,662,000,000
Senior notes | 5.125% stated rate      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 1,000,000,000    
Maturity - Maximum Date Dec. 31, 2019    
Debt instrument, stated interest rate 5.125%    
Total debt $ 0   998,000,000
Senior notes | 3.125% stated rate      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 1,500,000,000    
Maturity - Maximum Date Dec. 31, 2021    
Debt instrument, stated interest rate 3.125%    
Total debt $ 1,531,000,000   1,492,000,000
Senior notes | 2.050% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 700,000,000    
Maturity - Maximum Date Dec. 31, 2021    
Debt instrument, stated interest rate 2.05%    
Total debt $ 698,000,000   698,000,000
Senior notes | 2.400% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 500,000,000    
Maturity - Maximum Date Dec. 31, 2026    
Debt instrument, stated interest rate 2.40%    
Total debt $ 498,000,000   498,000,000
Senior notes | 3.050% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 1,000,000,000    
Maturity - Maximum Date Dec. 31, 2027    
Debt instrument, stated interest rate 3.05%    
Total debt $ 992,000,000   991,000,000
Senior notes | 3.400% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 750,000,000 $ 750,000,000  
Maturity - Maximum Date Dec. 31, 2029    
Debt instrument, stated interest rate 3.40% 3.40%  
Total debt $ 745,000,000   0
Senior notes | 2.45% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 1,000,000,000    
Maturity - Maximum Date Dec. 31, 2022    
Debt instrument, stated interest rate 2.45%    
Total debt $ 1,001,000,000   1,023,000,000
Senior notes | 2.350% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 600,000,000    
Maturity - Maximum Date Dec. 31, 2022    
Debt instrument, stated interest rate 2.35%    
Total debt $ 598,000,000   597,000,000
Senior notes | 2.500% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 1,000,000,000    
Maturity - Maximum Date Dec. 31, 2023    
Debt instrument, stated interest rate 2.50%    
Total debt $ 995,000,000   994,000,000
Senior notes | 2.800% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 500,000,000    
Maturity - Maximum Date Dec. 31, 2024    
Debt instrument, stated interest rate 2.80%    
Total debt $ 497,000,000   496,000,000
Senior notes | 6.20% stated rate      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 1,500,000,000    
Maturity - Maximum Date Dec. 31, 2038    
Debt instrument, stated interest rate 6.20%    
Total debt $ 1,483,000,000   1,482,000,000
Senior notes | 4.875% stated rate      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 500,000,000    
Maturity - Maximum Date Dec. 31, 2040    
Debt instrument, stated interest rate 4.875%    
Total debt $ 490,000,000   490,000,000
Senior notes | 3.625% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 375,000,000    
Maturity - Maximum Date Dec. 31, 2042    
Debt instrument, stated interest rate 3.625%    
Total debt $ 368,000,000   368,000,000
Senior notes | 3.400% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 500,000,000    
Maturity - Maximum Date Dec. 31, 2046    
Debt instrument, stated interest rate 3.40%    
Total debt $ 491,000,000   491,000,000
Senior notes | 3.750% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 1,150,000,000    
Maturity - Maximum Date Dec. 31, 2047    
Debt instrument, stated interest rate 3.75%    
Total debt $ 1,136,000,000   1,136,000,000
Senior notes | 4.250% senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 750,000,000    
Maturity - Maximum Date Dec. 31, 2049    
Debt instrument, stated interest rate 4.25%    
Total debt $ 742,000,000   0
Senior notes | Floating-rate senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 350,000,000    
Maturity - Maximum Date Dec. 31, 2021    
Total debt $ 349,000,000   349,000,000
Senior notes | 8.375% debentures      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 424,000,000    
Maturity - Maximum Date Dec. 31, 2020    
Debt instrument, stated interest rate 8.375%    
Total debt $ 431,000,000   419,000,000
Senior notes | 8.375% debentures      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 276,000,000    
Maturity - Maximum Date Dec. 31, 2030    
Total debt $ 281,000,000   274,000,000
Senior notes | Canadian senior note 2.125%      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 573,000,000    
Maturity - Maximum Date Dec. 31, 2024    
Debt instrument, stated interest rate 2.125%    
Total debt $ 570,000,000   548,000,000
Senior notes | Floating rate senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 400,000,000    
Maturity - Maximum Date Dec. 31, 2022    
Total debt $ 399,000,000   399,000,000
Senior notes | Floating-rate senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 500,000,000    
Maturity - Maximum Date Dec. 31, 2023    
Total debt $ 499,000,000   499,000,000
Senior notes | Floating-rate senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 1,041,000,000    
Maturity - Minimum Date Dec. 31, 2049    
Maturity - Maximum Date Dec. 31, 2067    
Total debt $ 1,028,000,000   1,029,000,000
Capital Lease Obligations      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 445,000,000    
Maturity - Minimum Date Dec. 31, 2019    
Maturity - Maximum Date Dec. 31, 3005    
Total debt $ 445,000,000   534,000,000
Pound Sterling notes | 5.500% notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 84,000,000    
Maturity - Maximum Date Dec. 31, 2031    
Debt instrument, stated interest rate 5.50%    
Total debt $ 84,000,000   84,000,000
Pound Sterling notes | 5.125% notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 578,000,000    
Maturity - Maximum Date Jan. 01, 2050    
Debt instrument, stated interest rate 5.125%    
Total debt $ 547,000,000   546,000,000
Euro Senior Notes | 0.375% notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 797,000,000    
Maturity - Maximum Date Dec. 31, 2023    
Debt instrument, stated interest rate 0.375%    
Total debt $ 792,000,000   797,000,000
Euro Senior Notes | 1.625% Euro Senior Notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 797,000,000    
Maturity - Maximum Date Dec. 31, 2025    
Debt instrument, stated interest rate 1.625%    
Total debt $ 792,000,000   798,000,000
Euro Senior Notes | 1.000% notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 569,000,000    
Maturity - Maximum Date Dec. 31, 2028    
Debt instrument, stated interest rate 1.00%    
Total debt $ 566,000,000   570,000,000
Euro Senior Notes | 1.500% notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 569,000,000    
Maturity - Maximum Date Dec. 31, 2032    
Debt instrument, stated interest rate 1.50%    
Total debt $ 565,000,000   569,000,000
Euro Senior Notes | Floating-rate senior notes      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 569,000,000    
Maturity - Maximum Date Dec. 31, 2020    
Total debt $ 568,000,000   572,000,000
Facility notes and bonds      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 320,000,000    
Maturity - Minimum Date Dec. 31, 2029    
Maturity - Maximum Date Dec. 31, 2045    
Total debt $ 319,000,000   320,000,000
Other debt      
Debt Instrument [Line Items]      
Debt Instrument, Face Amount $ 8,000,000    
Maturity - Minimum Date Dec. 31, 2019    
Maturity - Maximum Date Dec. 31, 2022    
Total debt $ 8,000,000   $ 13,000,000