Long-term Debt and Debt Facility Agreements - Long-term Debt (Detail) In Millions, unless otherwise specified	Dec. 31, 2013 USD ($)	Dec. 31, 2012 USD ($)	Dec. 31, 2013 3.30% Senior Notes due 2021 USD ($)	Dec. 31, 2012 3.30% Senior Notes due 2021 USD ($)	Dec. 31, 2013 Three Point Six Five Percent Senior Notes Due Two Thousand Twenty Three USD ($)	Dec. 31, 2012 4.50% Guaranteed Notes due 2014 USD ($)	Mar. 31, 2009 4.50% Guaranteed Notes due 2014 EUR (€)	Dec. 31, 2013 2.75% Guaranteed Notes due 2015 USD ($)	Dec. 31, 2012 2.75% Guaranteed Notes due 2015 USD ($)	Dec. 31, 2010 2.75% Guaranteed Notes due 2015 EUR (€)	Dec. 31, 2013 1.95% Senior Notes due 2016 USD ($)	Dec. 31, 2012 1.95% Senior Notes due 2016 USD ($)	Dec. 31, 2013 4.20% Senior Notes due 2021 USD ($)	Dec. 31, 2012 4.20% Senior Notes due 2021 USD ($)	Dec. 31, 2013 1.25% Senior Notes due 2017 USD ($)	Dec. 31, 2012 1.25% Senior Notes due 2017 USD ($)	Dec. 31, 2013 2.40% Senior Notes due 2022 USD ($)	Dec. 31, 2012 2.40% Senior Notes due 2022 USD ($)	Dec. 31, 2013 Guaranteed Notes One Point Five Zero Percent Due Two Thousand Nineteen USD ($)	Dec. 31, 2013 Guaranteed Notes One Point Five Zero Percent Due Two Thousand Nineteen EUR (€)	Dec. 31, 2013 2.65% Senior Notes due 2016 USD ($)	Dec. 31, 2012 2.65% Senior Notes due 2016 USD ($)	Dec. 31, 2012 Floating Rate Senior Notes due 2014 USD ($)	Dec. 31, 2013 Other variable rate debt USD ($)	Dec. 31, 2012 Other variable rate debt USD ($)
Proforma Debt Instrument [Line Items]
Long-term debt, carrying amount	$ 10,393	$ 9,509	$ 1,596	$ 1,595	$ 1,495	$ 1,324	€ 1,000	$ 1,373	$ 1,318	€ 1,000	$ 1,099	$ 1,099	$ 1,099	$ 1,099	$ 999	$ 999	$ 999	$ 998	$ 697	€ 500	$ 500	$ 500	$ 300	$ 536	$ 277