Period remaining until debt instruments mature.

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Proceeds from Issuance of Long-term Debt, Net of Debt Issuance Costs

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No definition available.

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Amount of minimum total shareholders' equity, excluding accumulated other comprehensive earnings / (losses) and the cumulative effects of an changes in accounting principles, that must be maintained in order to maintain in compliance of the debt covenant.

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No definition available.

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Total shareholders' equity, excluding accumulated other comprehensive earnings / (losses)

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No definition available.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Face (par) amount of debt instrument at time of issuance.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Face (par) amount of the original debt instrument that was repurchased.

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No definition available.

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- Definition

Amount of unamortized debt discount (premium) and debt issuance costs.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

Weighted average interest rate of debt outstanding.

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No definition available.

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Date the credit facility terminates, in CCYY-MM-DD format.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Debt and Borrowing Arrangements - Additional Information (Details) SFr in Millions										3 Months Ended		12 Months Ended
	Apr. 17, 2018 USD ($)	Apr. 02, 2018 USD ($)	Mar. 02, 2018 USD ($)	Mar. 02, 2018 CAD ($)	Feb. 28, 2018 USD ($)	Feb. 01, 2018 USD ($)	Jan. 26, 2018 USD ($)	Jan. 26, 2018 CHF (SFr)	Oct. 13, 2016	Mar. 31, 2018 USD ($)	Mar. 31, 2017 USD ($)	Sep. 30, 2017	Mar. 02, 2018 CAD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016
Debt Instrument [Line Items]
Long-term debt repaid										$ 738,000,000	$ 979,000,000
Weighted-average interest rate										2.30%				2.10%	2.20%
Fair value of total debt										$ 19,337,000,000				$ 18,354,000,000
Carrying value of total debt										18,788,000,000				17,652,000,000
Notes Payable \| 3.250% Canadian dollar-denominated Notes Due March 2025
Debt Instrument [Line Items]
Debt instrument, principal amount													$ 600,000,000
Debt instrument, interest rate			3.25%										3.25%
Proceeds from issuance of debt, net of discounts and underwriting fees			$ 461,000,000	$ 595,000,000
Debt issuance costs			$ 4,000,000
Notes Payable \| 6.125% U.S. dollar-denominated Notes
Debt Instrument [Line Items]
Debt instrument, interest rate						6.125%
Long-term debt repaid						$ 478,000,000
Notes Payable \| 0.080% Swiss franc-denominated Notes
Debt Instrument [Line Items]
Debt instrument, interest rate							0.08%	0.08%
Long-term debt repaid							$ 260,000,000	SFr 250
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity					$ 1,500,000,000
Line of credit facility outstanding amount										0
Line of credit, expiration period					364 days
Revolving credit facility expiration date					Feb. 27, 2019
Revolving Credit Facility, October 11, 2021
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity					$ 4,500,000,000					4,500,000,000.0
Line of credit facility outstanding amount										0
Revolving credit facility expiration date									Oct. 11, 2018			Oct. 11, 2021
Revolving credit facility debt covenant										24,600,000,000
Total shareholders' equity, excluding accumulated other comprehensive earnings / (losses)										36,300,000,000
Subsequent Event \| Notes Payable
Debt Instrument [Line Items]
Debt repurchased amount	$ 570,000,000
Subsequent Event \| Notes Payable \| 6.500% U.S. dollar-denominated Notes Due February 2040
Debt Instrument [Line Items]
Debt repurchased amount	$ 241,000,000
Debt instrument, interest rate	6.50%
Subsequent Event \| Notes Payable \| 5.375% U.S. dollar-denominated Notes Due February 2020
Debt Instrument [Line Items]
Debt repurchased amount	$ 97,600,000
Debt instrument, interest rate	5.375%
Subsequent Event \| Notes Payable \| 6.500% U.S. dollar-denominated Notes Due November 2031
Debt Instrument [Line Items]
Debt repurchased amount	$ 75,800,000
Debt instrument, interest rate	6.50%
Subsequent Event \| Notes Payable \| 6.875% U.S. dollar-denominated Notes Due February 2038
Debt Instrument [Line Items]
Debt repurchased amount	$ 72,100,000
Debt instrument, interest rate	6.875%
Subsequent Event \| Notes Payable \| 6.125% U.S. dollar-denominated Notes Due August 2018
Debt Instrument [Line Items]
Debt repurchased amount	$ 42,600,000
Debt instrument, interest rate	6.125%
Subsequent Event \| Notes Payable \| 6.875% U.S. dollar-denominated Notes Due January 2039
Debt Instrument [Line Items]
Debt repurchased amount	$ 29,300,000
Debt instrument, interest rate	6.875%
Subsequent Event \| Notes Payable \| 7.000% U.S. dollar-denominated Notes Due August 2037
Debt Instrument [Line Items]
Debt repurchased amount	$ 11,700,000
Debt instrument, interest rate	7.00%
International Subsidiaries
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity										$ 1,800,000,000				$ 2,000,000,000
Commercial paper \| Minimum
Debt Instrument [Line Items]
Commercial paper, maturity period										2 days
Commercial paper \| Maximum
Debt Instrument [Line Items]
Commercial paper, maturity period										118 days
Bank loans \| Subsequent Event \| Revolving Credit Facility \| 364-Day Senior Unsecured Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity		$ 2,000,000,000.0
Borrowings from line of credit facility	$ 714,000,000
Line of credit, expiration period		364 days